Four Lucky Diamonds

Demo, RTP 94.03%, paytable, symbols & full capture data

Free demo · not real-money play
✓ Working · checked 2 weeks, 2 days ago Verified · 09 Aug 2026
RTP 94.03%
Volatility
Max win ×2500
Grid 5×3
For webmasters & affiliates
Embed demo

Direct demo link or iframe code for your site. Free · no sign-up

Asset pack

36 screenshots · 10 symbol icons · palette · spec sheet. ZIP — captcha check, no sign-up

Slot API

GET /v1/slots/four-lucky-diamonds-b10/

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136 API calls this month
Ask AI MCP

This slot’s spec, symbols, palette and demo link — queryable from Claude, Cursor or VS Code. Read-only · free · no key, no sign-up.

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Verified capture
iGaming Tools capture pipeline Manual demo playthrough · paytable OCR-verified

Captured by hand from a live demo and verified frame-by-frame — the paytable was OCR-checked against the provider. 3 aspects we couldn’t confirm are flagged below, not hidden.

Captured 09 Aug 2026 View capture log

Per-screen breakdown

36 demo screens
36 PNG (ZIP)
Autoplay settings
autoplay Autoplay settings
Base game
base_game Base game
Base game
base_game Base game
Base game
base_game Base game
Base game
base_game Base game
Base game
base_game Base game
Bonus features
bonus Bonus features
Bonus features
bonus Bonus features
Bonus features
bonus Bonus features
Bonus features
bonus Bonus features
Bonus features
bonus Bonus features
Logo
logo Logo
Paytable
paytable Paytable
Paytable
paytable Paytable
Paytable
paytable Paytable
Paytable
paytable Paytable
Paytable
paytable Paytable
Paytable
paytable Paytable
Paytable
paytable Paytable
Preview / Loading screen
preview Preview / Loading screen
Rules / How to play
rules Rules / How to play
Rules / How to play
rules Rules / How to play
Rules / How to play
rules Rules / How to play
Rules / How to play
rules Rules / How to play
Rules / How to play
rules Rules / How to play
Rules / How to play
rules Rules / How to play
Rules / How to play
rules Rules / How to play
Rules / How to play
rules Rules / How to play
Rules / How to play
rules Rules / How to play
Rules / How to play
rules Rules / How to play
Rules / How to play
rules Rules / How to play
Rules / How to play
rules Rules / How to play
Rules / How to play
rules Rules / How to play
Rules / How to play
rules Rules / How to play
Game settings
settings Game settings
Win screen
win_screen Win screen

What we extracted from Four Lucky Diamonds

Everything pulled from Four Lucky Diamonds into machine-readable data — symbols, paytable, palette, modes and assets. A capture result, not a game review.
36 screens captured
10 symbols catalogued · payouts OCR-verified
10 palette colors from frames
7 accessibility groups profiled
3 gameplay modes NOT captured — flagged honestly below

manual demo playthrough → 36 screens captured → paytable verified (OCR) → catalogued & reviewed

Specification

verified parameters
provider BGaming
max_win_x ×2500
layout 5×3
paylines 10 fixed
bonus_buy No
mechanic Video Slot
release_date 2021

RTP configurations

This game does not run at one fixed RTP. It ships 2 figures, and which one applies depends on the condition in each row — buying the bonus, an ante bet or a game setting. All of them were read off the game’s own rules screen.

Variant RTP Condition
Default headline 94.03% Upper bound of 92.84-94.03% range; depends on Lucky Spins collect/continue strategy
Default 92.84% Lower bound of 92.84-94.03% range; depends on Lucky Spins collect/continue strategy

See how this RTP compares across BGaming’s full range →

Symbols & paytable

10 symbols
10 icons (ZIP)
Wild (blue diamond)
Wild (blue diamond)
Wild

Bright blue faceted diamond on gold-bordered dark tile. Not present in base game — available only inside the Lucky Spins bonus round, where it substitutes any symbol in a line.

Heart (red ruby heart with diamond border)
Heart (red ruby heart with diamond border)
High Pay

Heart-shaped red ruby outlined with small white diamonds. Highest-paying symbol.

MatchPayoutUnit
3x 10.00 Multiplier
4x 50.00 Multiplier
5x 250.00 Multiplier
Red '7'
Red '7'
High Pay

Bold red numeral '7' with orange-gold gradient edge, classic lucky-seven style.

MatchPayoutUnit
3x 7.50 Multiplier
4x 20.00 Multiplier
5x 50.00 Multiplier
Gold bell
Gold bell
High Pay

Solid gold/yellow bell with round clapper, classic slot-machine bell shape. Pays identically to the blue star (tied tier).

MatchPayoutUnit
3x 5.00 Multiplier
4x 10.00 Multiplier
5x 40.00 Multiplier
Blue star
Blue star
High Pay

Five-pointed blue star with thin gold/orange outline on dark tile. Pays identically to the gold bell (tied tier).

MatchPayoutUnit
3x 5.00 Multiplier
4x 10.00 Multiplier
5x 40.00 Multiplier
Orange/gold round gem
Orange/gold round gem
Low Pay

Round, multi-faceted orange-to-gold gem (citrine-like) with pink/magenta outline glow. Pays identically to the green triangular gem (tied tier).

MatchPayoutUnit
3x 2.00 Multiplier
4x 5.00 Multiplier
5x 20.00 Multiplier
Green triangular gem
Green triangular gem
Low Pay

Triangular/shield-shaped bright green faceted gem with pink/magenta outline glow. Pays identically to the orange/gold round gem (tied tier).

MatchPayoutUnit
3x 2.00 Multiplier
4x 5.00 Multiplier
5x 20.00 Multiplier
Red rectangular gem
Red rectangular gem
Low Pay

Rectangular-cut bright red/coral faceted gem with thin pink outline, distinct from the heart symbol. Lowest-paying tier, tied with the pink and blue rectangular gems.

MatchPayoutUnit
3x 1.00 Multiplier
4x 3.00 Multiplier
5x 15.00 Multiplier
Pink/magenta rectangular gem
Pink/magenta rectangular gem
Low Pay

Rectangular-cut magenta/purple faceted gem with thin pink outline. Lowest-paying tier, tied with the red and blue rectangular gems.

MatchPayoutUnit
3x 1.00 Multiplier
4x 3.00 Multiplier
5x 15.00 Multiplier
Blue rectangular gem
Blue rectangular gem
Low Pay

Rectangular-cut bright blue faceted gem with thin pink outline, most frequently seen filler symbol. Lowest-paying tier, tied with the red and pink rectangular gems.

MatchPayoutUnit
3x 1.00 Multiplier
4x 3.00 Multiplier
5x 15.00 Multiplier

Bonus modes

2 modes
Base Game Modifier base
Base Game

5x3 fixed grid, 10 fixed paylines always active (no line-count or bet-mode selector). Wins can be counted from any reel; only the highest win is paid per active payline; multiple paylines pay simultaneously and are summed into Total Win. Wild symbol does not appear here.

Bonus Mode lucky_spins
Lucky Spins (bonus round)

Gamble-style bonus, not classic free spins: opens automatically when a base-game win reaches 4x total bet or more (no buy option). Single reel window is replaced by four separate 5x3 mini reel-boards. Lucky bet is fixed at 4x the triggering total bet (raisable by the player if the pot allows) and is deducted from the accumulated Winnings pot itself, not from main balance; main Balance stays frozen until the round ends. Capped at 50 spins; ends on spin cap, pot exhaustion, or pressing Collect, after which the remaining Winnings are paid to Balance. Blue diamond Wild is available only in this mode and substitutes any symbol in a line. Stacked Wild can fill the 3rd (central) reel of a mini-board; if exactly 3 Wilds land on a board's central reel they duplicate (Replicate Stacked Wild) onto that board's other reels (asymmetric duplication rules depending on which reel the 3-stack lands on; no duplication for 1-2 Wilds or a 3-stack on the last reel). A separate autospin control inside the bonus offers a spin count computed from remaining Winnings and current Lucky bet.

Colour system

extracted from frames · HEX
Export palette
#59051D base dominant 1 base
#2E0110 base dominant 2 base
#981329 base dominant 3 base
#E4A213 base dominant 4 base
#F9D717 base dominant 5 base
#089BF2 base dominant 6 base
#5C061D bonus dominant 1 bonus
#2B020F bonus dominant 2 bonus
#E8A212 bonus dominant 3 bonus
#FADC14 bonus dominant 4 bonus

Accessibility

profile for all groups
Color Blind
  • Every paying symbol is distinguishable by outline shape independent of hue: heart, numeral '7', bell, star, and three differently-cut gem shapes (round/citrine, triangular, rectangular).
  • The three lowest-value gems (red, pink/magenta, blue) share one identical rectangular cut and pay identically at every tier, so no color discrimination is needed to judge their value.
  • Payline diagrams in the paytable are rendered as filled vs unfilled grid cells (orange-filled vs grey-empty) — position/fill state carries the information, not hue alone.
Screen Reader
  • Control layout is stable across screens (info/settings bottom-left, balance/bet bottom-center, autoplay/spin bottom-right). Paytable and rules panels are linear and scrollable, but this build does not print 'Page N/M' text — pages scroll as one continuous sheet.
Motor Accessibility
  • Bet adjustment uses small +/- arrow hitboxes next to the bet readout, while the Spin control is a large circular target. Autoplay offers preset round counts (10 up to unlimited), and the Lucky Spins bonus has its own autospin option, reducing required manual interactions.
Hearing Accessibility
  • No game information is conveyed by audio alone; all state (Lucky spins counter, Winnings, Total win, spin results) is shown as on-screen text/graphics. Music and Sound FX are independently toggleable in Settings.
Low Vision
  • Max win figure on the loading splash ('MAX WIN 2500x') is large, high-contrast gold text on a dark background; win celebration text is shown on a high-contrast gold-bordered plaque.

Media & assets

7 files · 7 types
36 PNG (ZIP)
Base game
base_game
Base game
base_game
Base game
base_game
Base game
base_game
Base game
base_game
Logo
logo
Preview / Loading screen
preview

Data provenance

what we captured and what we didn't
base game, base-game win with payline evaluation, bet min/max, paytable (7 pages), rules (14 pages), settings, autoplay panel
Lucky Spins bonus round: trigger win, entry screen, mid-round gameplay, Stacked Wild / Replicate Stacked Wild mechanic, round end, return to base game
Volatility rating is not stated anywhere in the captured splash/paytable/rules screens (no flame-icon indicator, no text label) — left unreadable/uncertain, not invented
Whether the rules-document date (February 12, 2021, 'rule version 1.0') reflects the true original release date of the game, or only the current rules-document revision, is not established from these frames alone
Exact formula for how many autospins are offered inside the Lucky Spins bonus (described only as computed from Winnings and Lucky bet) is not shown with a worked example on any captured frame

Ask AI about Four Lucky Diamonds

MCP · VERIFIED CAPTURE DATA

AI apps like Claude are chat apps: you ask, they answer. Normally they can’t see this capture — MCP is the plug that connects them to it. Add one link, and your chat answers with this slot’s verified data. No coding.

Server https://mcp.i-gaming.tools/mcp paste into Claude, Cursor, VS Code, Gemini, Codex, Windsurf or Zed · read-only · free · no key Setup guides →
What it looks like

How does Four Lucky Diamonds play? Keep it simple.

5x3 fixed grid, 10 fixed paylines always active (no line-count or bet-mode selector). Wins can be counted from any reel; only the highest win is paid per active payline; multiple paylines pay simultaneously and are summed into Total Win. Wild symbol does not appear here.

RTP 94.03%max win ×2500demo ✓

From the verified capture of 09 Aug 2026 — not from the AI’s memory.

Playersearch_slots

“Find slots like this but medium volatility — with free demos.”

→ matches by mechanics and theme; official free demos only.

Affiliateget_slot ×2

“Comparison table: Four Lucky Diamonds vs Multihand Blackjack — RTP, max win, bonus buy.”

→ side-by-side table, ready for your review page.

Editorget_slot

“Fact-check my review: RTP, max win, paylines, bonus-buy price, release year.”

→ OCR-verified numbers — including the 3 aspects we couldn’t confirm, flagged.

Designerget_slot

“Creative brief: theme, 10 palette hexes and all 10 symbol descriptions.”

→ same palette and symbol data as the sections above, as one brief.

Verified capture: manual playthrough, paytable OCR-checked Honest gaps: 3 uncaptured aspects flagged, not hidden Read-only · free, no key · per-IP rate limit 18+Free demo data only — no real-money links

Technical info

Free JSON data API — token auth.
GET /api/v1/slots/four-lucky-diamonds-b10/

Public data API. Send Authorization: Token <your-token>. Full structured data, media and demo links in one call. See the API docs.

Spec sheet — extracted, unverified. This is the raw OCR dump, not the full API response.
GET /api/v1/slots/four-lucky-diamonds-b10/
{
  "game": {
    "name": "Four Lucky Diamonds",
    "provider": "BGaming",
    "sub_studio": "None — only 'BGaming' branding appears on the splash screen and in the paytable/rules footer (small 'B' badge icon top-left on every screen). No sub-studio credit anywhere in the captured frames.",
    "theme": "Classic jewel/gem-themed fruit-machine style slot. No narrative characters or setting — pure gem/'lucky diamond' iconography (diamonds, gems, a heart-shaped ruby, a lucky '7', a gold bell, a star) on a warm magenta/burgundy backdrop.",
    "documentation_purpose": "Exhaustive accessibility documentation (blind/low-vision screen-reader users, deaf/hard-of-hearing, color-blind of all types, motor-impaired) built from 30 desktop screenshots (1280x800) + verbatim OCR/rules text + zoomed crops of the paytable icons and payline diagrams.",
    "method_notes": "Symbol payouts and all 10 payline diagrams were read directly from zoomed paytable crops (paytable_p1.png-paytable_p7.png). Full 14-page in-game rules booklet (rules_p1.png-rules_p14.png) was read verbatim for feature mechanics, RTP, betting and settings text. Numbers not clearly legible are listed in 'unreadable_or_uncertain' and were not invented.",
    "language": "English",
    "currency_in_demo": "FUN (BGaming's standard play-money demo currency, not an error)."
  },

  "color_palette": {
    "background": "Deep magenta/burgundy radial gradient with faint pink sparkle particles and soft red glow rays emanating from the top; darkens toward the corners.",
    "reel_frame": "Thick rounded-corner gold/yellow frame around the 5x3 reel window.",
    "reel_cells": "Dark maroon/near-black cells separated by thin gold dividers; individual symbols have their own bright neon outline (see symbols below).",
    "title_wordmark": "'Four Lucky Diamonds' in yellow-gold cursive/script lettering with a thin red-orange outline and a subtle white sparkle highlight; flanked left and right by a small blue faceted diamond icon.",
    "bottom_bar": "Near-black translucent bar; text in white/light grey, monetary values in white, active fields highlighted white-on-dark.",
    "bonus_round_background": "Same magenta/burgundy palette as base game, reused for all 4 mini reel-boards; the active/entering board is outlined with a bright glowing yellow-gold border.",
    "win_celebration": "Golden-yellow burst/rays background with orange coin sprites falling, pink 'MEGA WIN'/win-amount plaque with gold border.",
    "accent_colors": "Gold (frame, wordmark, win banners, bell symbol), red (heart symbol, '7' symbol, background glow), blue (wild diamond, star symbol, some gem tiers), green (one gem tier), magenta/pink (one gem tier)."
  },

  "reel_and_lines": {
    "grid": "5 reels x 3 rows, fixed (no reel-height variation), verified by direct pixel count on base_game.png.",
    "paylines": "10 fixed paylines, always active — no line-count or bet-mode selector exists anywhere in the UI (confirmed: only a 'Total bet' +/- control is present on the bottom bar; the in-game rules text says only 'The game features win lines', with no mention of choosing a number of lines).",
    "declared_source": "paytable_p6.png / paytable_p7.png (line diagrams), base_game.png (grid), rules_p1.png ('The game features win lines').",
    "win_evaluation_rules": "From rules_p9/p10 verbatim: 'Wins can be counted from any (not necessarily the first) reel.' 'Wins are calculated on lines on all adjacent symbols.' 'Payouts are made according to the paytable.' 'Note that only the highest win is paid on each of the active paylines.' Multiple different paylines can pay simultaneously and their wins are summed into Total Win."
  },

  "payout_basis": {
    "value": "total_bet_multiplier",
    "explanation": "The paytable prints currency sums anchored to the bet active at the time it was opened (0.20 FUN in the captured frames). On base_game_win.png, at Total bet 0.20 FUN, 'Line 8 pays' produced Total win 0.20 FUN for 3 matching pink/magenta gems — this equals exactly the paytable's '3: 0.20 FUN' entry for that gem tier at the same 0.20 bet. Dividing every printed paytable sum by the 0.20 anchor bet yields a clean, small multiplier for every symbol/tier (see symbols below), confirming the printed sums are total-bet multiples, not fixed coin values.",
    "evidence_frame": "base_game_win.png"
  },

  "symbols": {
    "note": "Payout multipliers below = printed FUN sum from paytable_p1.png/paytable_p2.png divided by the paytable's anchor bet of 0.20 FUN. Exact FUN sums at that anchor bet are quoted in each entry's 'printed_at_0.20_bet' field for traceability.",
    "wild": {
      "name": "Wild (blue diamond)",
      "appearance": "Bright blue faceted diamond/gem icon on a gold-bordered dark tile, with the word 'Wild' in yellow script beneath it.",
      "rules": "Verbatim from paytable_p1.png and rules_p4.png: 'Wild symbol is available in bonus round.' / 'Wild Symbol substitutes any symbol in a line to complete a winning combination. Available during the bonus round only.' The Wild does NOT appear in the base game — confirmed by its absence on base_game.png and base_game_win.png, and by the explicit rules text.",
      "special_forms_in_bonus": "Stacked Wild (can appear stacked filling a full reel, only on the 3rd/central reel of the four bonus mini-boards) and Replicate Stacked Wild (see lucky_spins_bonus.stacked_wild_mechanics below)."
    },
    "paying_symbols_high_to_low": [
      {
        "name": "Heart (red ruby heart with diamond border)",
        "appearance": "Heart-shaped red ruby/gem outlined with a ring of small white diamonds, on a gold sparkle-pattern tile.",
        "rank": "highest-paying symbol",
        "printed_at_0.20_bet": {"5": "50.00 FUN", "4": "10.00 FUN", "3": "2.00 FUN"},
        "payout_multiplier_of_total_bet": {"5": "250x", "4": "50x", "3": "10x"}
      },
      {
        "name": "Red '7'",
        "appearance": "Bold red numeral '7' with an orange-gold gradient edge and thin gold outline, classic fruit-machine lucky-seven style.",
        "printed_at_0.20_bet": {"5": "10.00 FUN", "4": "4.00 FUN", "3": "1.50 FUN"},
        "payout_multiplier_of_total_bet": {"5": "50x", "4": "20x", "3": "7.5x"}
      },
      {
        "name": "Gold bell",
        "appearance": "Solid gold/yellow bell with a round clapper, classic slot-machine bell shape.",
        "printed_at_0.20_bet": {"5": "8.00 FUN", "4": "2.00 FUN", "3": "1.00 FUN"},
        "payout_multiplier_of_total_bet": {"5": "40x", "4": "10x", "3": "5x"}
      },
      {
        "name": "Blue star",
        "appearance": "Five-pointed blue star with a thin gold/orange outline on a dark square tile.",
        "printed_at_0.20_bet": {"5": "8.00 FUN", "4": "2.00 FUN", "3": "1.00 FUN"},
        "payout_multiplier_of_total_bet": {"5": "40x", "4": "10x", "3": "5x"},
        "note": "Pays identically to the gold bell (tied tier)."
      },
      {
        "name": "Orange/gold round gem",
        "appearance": "Round, multi-faceted orange-to-gold gem (citrine-like) with a bright white highlight and thin pink/magenta outline glow.",
        "printed_at_0.20_bet": {"5": "4.00 FUN", "4": "1.00 FUN", "3": "0.40 FUN"},
        "payout_multiplier_of_total_bet": {"5": "20x", "4": "5x", "3": "2x"}
      },
      {
        "name": "Green triangular gem",
        "appearance": "Triangular/shield-shaped bright green faceted gem with a pink/magenta outline glow.",
        "printed_at_0.20_bet": {"5": "4.00 FUN", "4": "1.00 FUN", "3": "0.40 FUN"},
        "payout_multiplier_of_total_bet": {"5": "20x", "4": "5x", "3": "2x"},
        "note": "Pays identically to the orange/gold round gem (tied tier)."
      },
      {
        "name": "Red rectangular gem",
        "appearance": "Rectangular cut, bright red/coral faceted gem with a thin pink outline — distinct from the heart symbol (which is heart-shaped and diamond-bordered).",
        "printed_at_0.20_bet": {"5": "3.00 FUN", "4": "0.60 FUN", "3": "0.20 FUN"},
        "payout_multiplier_of_total_bet": {"5": "15x", "4": "3x", "3": "1x"},
        "rank": "lowest-paying tier (tied with pink and blue gems)"
      },
      {
        "name": "Pink/magenta rectangular gem",
        "appearance": "Rectangular cut, magenta/purple faceted gem with a thin pink outline. This is the tier shown paying on 'Line 8' in base_game_win.png.",
        "printed_at_0.20_bet": {"5": "3.00 FUN", "4": "0.60 FUN", "3": "0.20 FUN"},
        "payout_multiplier_of_total_bet": {"5": "15x", "4": "3x", "3": "1x"},
        "rank": "lowest-paying tier (tied with red and blue gems)"
      },
      {
        "name": "Blue rectangular gem",
        "appearance": "Rectangular cut, bright blue faceted gem with a thin pink outline — the most frequently seen filler symbol on the reels.",
        "printed_at_0.20_bet": {"5": "3.00 FUN", "4": "0.60 FUN", "3": "0.20 FUN"},
        "payout_multiplier_of_total_bet": {"5": "15x", "4": "3x", "3": "1x"},
        "rank": "lowest-paying tier (tied with red and pink gems)"
      }
    ],
    "total_symbol_count": "9 paying symbols + 1 Wild (bonus-round-only) = 10 distinct symbol graphics.",
    "color_blind_notes": "Symbols are distinguished primarily by SHAPE (heart vs numeral vs bell vs star vs three differently-cut gem outlines: round, triangular, rectangular) in addition to color, so shape alone is sufficient to tell tiers apart even without color perception. The three lowest-tier gems (red, pink, blue) share an identical rectangular cut and pay identically, so no color discrimination is needed to know their value — they are interchangeable for payout purposes."
  },

  "paylines_diagram": {
    "source": "paytable_p6.png (lines 1-4 with reel-board illustration) and paytable_p7.png (compact grid of all 10 lines), zoomed and read pixel-by-pixel.",
    "notation": "For each line, the row lit per reel (1=top row, 2=middle row, 3=bottom row), reels numbered 1 (left) to 5 (right).",
    "lines": [
      {"line": 1, "pattern_rows_by_reel": [2, 2, 2, 2, 2], "shape": "Straight middle row."},
      {"line": 2, "pattern_rows_by_reel": [1, 1, 1, 1, 1], "shape": "Straight top row."},
      {"line": 3, "pattern_rows_by_reel": [3, 3, 3, 3, 3], "shape": "Straight bottom row."},
      {"line": 4, "pattern_rows_by_reel": [1, 2, 3, 2, 1], "shape": "V-shape: top, dipping to middle, to bottom, back to middle, back to top."},
      {"line": 5, "pattern_rows_by_reel": [3, 2, 1, 2, 3], "shape": "Inverted V (peak): bottom, rising to middle, to top, back to middle, back to bottom."},
      {"line": 6, "pattern_rows_by_reel": [2, 1, 1, 1, 2], "shape": "Arch on the top row with both ends dipping to the middle row."},
      {"line": 7, "pattern_rows_by_reel": [2, 3, 3, 3, 2], "shape": "Arch on the bottom row with both ends rising to the middle row."},
      {"line": 8, "pattern_rows_by_reel": [1, 1, 2, 3, 3], "shape": "Descending staircase from top-left to bottom-right (this is the line shown paying in base_game_win.png)."},
      {"line": 9, "pattern_rows_by_reel": [3, 3, 2, 1, 1], "shape": "Ascending staircase from bottom-left to top-right (mirror of line 8)."},
      {"line": 10, "pattern_rows_by_reel": [3, 1, 3, 1, 3], "shape": "Zigzag using only the top and bottom rows (skips the middle row entirely)."}
    ]
  },

  "technical_summary": {
    "bet_min": "0.20 FUN",
    "bet_max": "50.00 FUN",
    "bet_source": "Measured by pressing the '+'/'-' bet buttons to their hard limit and confirmed by zoomed crop: at minimum the down-arrow is visibly disabled/greyed (bet_min.png); at maximum the up-arrow is disabled (bet_max.png).",
    "max_win": "2500x total bet, printed on the loading splash screen ('MAX WIN 2500x', preview.png).",
    "rtp_percent_range": "92.84% - 94.03%, depending on player strategy in the Lucky Spins bonus round.",
    "rtp_source": "rules_p12.png / rules_p13.png verbatim: \"The overall theoretical Return to Player (RTP) is 92,84 - 94,03% depending on the player's strategy.\" Because the Lucky Spins bonus is an optional gamble round the player can choose to Collect immediately or keep spinning, the realized RTP is not a single fixed number — it is a range bounded by the two extreme strategies (always collecting immediately vs. always continuing to spin).",
    "volatility": "Not stated anywhere in the captured rules/paytable/splash screens — no volatility indicator (flame icons, text label) is present. Left as unreadable/uncertain, not invented.",
    "bonus_buy": "Not present. Verified by (a) pixel inspection of the entire bottom control bar and every popup panel (settings/autoplay/paytable/rules) — no BUY control exists anywhere; (b) a DOM probe returning zero interactive elements (all-canvas UI); (c) reading the complete 14-page rules booklet, where the word 'buy'/'purchase' never appears — the only route into the bonus is a natural win of 4x bet or more.",
    "reels_and_lines": "5x3 grid, 10 fixed paylines, no selectable game mode.",
    "rng": "rules_p13.png: 'The game is based on a certified random number generator.'",
    "malfunction_clause": "rules_p14.png verbatim: 'Malfunction voids all plays and pays! All unfinished rounds will be terminated every 24 hours. If the game requires \"Collect\" - \"Collect\" will take place and the win from the round will be added to the player balance. If the game requires action from a player, the result is counted assuming that the player has chosen the action with no risk without raising the initial bet.'",
    "rules_version": "'This is the game rule version 1.0, dated February 12, 2021. Game Version 1.0.0.' (rules_p14.png) — this is the rules-document version, not necessarily the game's original release date.",
    "keyboard": "Spacebar can be used to spin instead of clicking the Spin button (rules_p10.png; also toggleable in Settings, 'Spacebar to spin', ON by default in settings.png).",
    "quick_spin_availability": "'Quick spin - the speed of spinning reels increases. Depending on license requirements, this feature may not be available.' (rules_p10.png). In the captured session the Quick Spin checkbox is present but shown greyed out/unchecked in both the Settings panel (settings.png) and the Autoplay 'Advanced' panel (autoplay.png), consistent with it being disabled for this license/session."
  },

  "lucky_spins_bonus": {
    "classification": "This is NOT a classic Free Spins feature. It is explicitly labelled in the in-game rules as a GAMBLE round with a persistent, spendable pot ('Winning field'/'Winnings'), which the player can walk away from at any time via a Collect button.",
    "trigger": "Opens automatically whenever a base-game win reaches 4x the Total Bet or more (verbatim, paytable_p3.png: 'Four playable reels become available in case the wins in the main game reach the fourfold size of the bet (or higher).'). There is no purchase/buy option — the only way in is a qualifying natural win.",
    "entry_screen": "On trigger, the single 5x3 reel window is replaced by four separate 5x3 mini reel-boards, numbered 1-4 (illustrated on paytable_p3.png/p4.png), arranged 2x2. A counter at the top reads '<N> Lucky spins / max 50'. Captured in bonus_enter.png at counter 0.",
    "economics": {
      "lucky_bet": "The stake for each spin inside the round, called 'Lucky bet'. Its MINIMUM is fixed at 4x the base Total Bet that triggered the round (e.g. Total bet 0.20 FUN -> Lucky bet 0.80 FUN, confirmed on bonus_enter.png/bonus_gameplay.png). Verbatim (rules_p7/p8): 'The bet value (minimum) is equal to the bet from the main game x4.' The Lucky bet CAN be increased by the player if the accumulated Winnings allow it ('If the win amount allows - the bet can be increased by the player.').",
      "funding_source": "Critically, each Lucky spin is paid for OUT OF THE ACCUMULATED WINNINGS POT, not out of the player's main balance. Verbatim: 'By clicking on Spin: the value of Winning field decreases by the value of the bet (in the Lucky bet field). The Winning field increases by the winning amount from the current spin.' The main account Balance is frozen and unaffected until the round ends ('The balance remains unchanged throughout the round.').",
      "starting_pot": "The Winning field starts the round showing the win from the main game that triggered it (i.e. the qualifying win amount becomes the opening bankroll for the bonus)."
    },
    "spin_cap": "Maximum 50 spins per round (rules_p8.png: 'The maximum number of spins in the bonus round is 50.'), shown live as 'max 50' next to the spin counter in the top banner.",
    "end_conditions": "The round ends when EITHER the spin/quantity limit is reached, OR the monetary pot runs out (the rules call this 'the limit is over (quantitative or monetary)'), OR the player presses the Collect button at any time. On end, whatever remains in the Winnings field is added to the main Balance and the player is returned to the standard 5x3 base game.",
    "wild_symbol_in_bonus": "The blue diamond Wild symbol becomes available ONLY inside this bonus round (absent from the base game entirely) and substitutes for any symbol in a line.",
    "stacked_wild_mechanics": {
      "stacked_wild": "Can appear on the 3rd (central) reel of any of the 4 mini boards, potentially filling that reel with Wilds top-to-bottom, substituting other symbols to help complete lines.",
      "replicate_stacked_wild": "Verbatim (rules_p6.png): if 3 stacked Wilds land on the CENTRAL reel of a board, they are duplicated to the OTHER reels of the SAME board. If 3 Wilds land on the 2nd reel of 4, they duplicate to reels 3 and 4 only (not to reel 1). If 3 Wilds land on the 3rd reel of 4, they duplicate only to reel 4. If 3 Wilds land on the 4th (last) reel, there is no duplication at all. If only 1 or 2 Wild symbols land on any reel (not exactly 3), there is no duplication.",
      "illustrated_frame": "bonus_stacked_wild.png shows a 3-stack of Wilds on the central reel of one board, replicated diagonally into the two neighbouring boards (yellow arrows in the paytable illustration on paytable_p4.png/p5.png show the same mechanic schematically)."
    },
    "autospins_in_bonus": "A separate autospin control is available inside the bonus; the NUMBER of autospins offered is calculated dynamically from the remaining Winnings and the current Lucky bet size (how many spins the pot can still afford), not a fixed player-chosen count like in the base game (rules_p7.png).",
    "captured_sequence": [
      {"frame": "bonus_trigger.png", "content": "Winning spin of 8 gold bells (3x3 block plus 2 more) triggering a rising win counter toward MEGA WIN; diagonal gold payline-cross overlay drawn over reels 4-5."},
      {"frame": "win_screen.png", "content": "'MEGA WIN 6.00 FUN' celebration screen (Total bet was 0.20 FUN, i.e. a 30x-bet win, well above the 4x threshold), trumpet and falling-coin graphics, gold burst background."},
      {"frame": "bonus_enter.png", "content": "Entry into Lucky Spins: 4 mini reel-boards (numbered via the earlier paytable illustration), counter '0 Lucky spins / max 50', Lucky bet 0.80 FUN, Winnings: 6.00 FUN, board highlighted with a glowing gold outline before the first bonus spin."},
      {"frame": "bonus_gameplay.png", "content": "Mid-round state: '11 Lucky spins' played so far, Lucky bet 0.80 FUN, Winnings: 3.80 FUN; bottom-right shows a money-bag/coin icon (Collect), an 'A' autoplay icon badged with '4' (available/queued autospins), and the circular spin icon."},
      {"frame": "bonus_stacked_wild.png", "content": "3 Lucky spins played, 'WIN 1.11' plaque, top board (board 2) shows a diagonal 3-of-a-kind win highlighted with sparkle tiles and a gold connecting line, while the central-reel Wild replication mechanic is visible feeding into the adjoining board."},
      {"frame": "bonus_end.png", "content": "Final state of the round: the 'Lucky spins' counter banner has disappeared, all 4 boards show static filled grids, Total bet/Total win labels have reverted to base-game style text reading 'Total bet 0.20 FUN' / 'Total win 0.20 FUN' (the last remaining Winnings amount about to be paid out)."},
      {"frame": "bonus_return_base.png", "content": "Back in the normal single 5x3 reel view; Balance now 998.40 FUN, Total bet 0.20 FUN — confirms the round's net result was credited to Balance and normal play resumed."}
    ]
  },

  "screens": {
    "preview": {
      "type": "preview",
      "content": "Loading splash before entering the game. Small yellow 'B' (BGaming) badge top-left. Title 'Four Lucky Diamonds' in gold cursive script flanked by two small blue diamond icons. Three illustrations side by side: (1) a 2x2 grid of four small mini reel-boards labelled 1-4 under the caption 'LUCKY SPINS'; (2) a single reel strip of 3 stacked blue 'Wild' diamond tiles captioned 'STACKED WILDS'; (3) a reel-board with yellow arrows showing Wilds propagating from the leftmost reel into two neighbouring boards, captioned 'REPLICATE STACKED WILD'. Below: 'MAX WIN 2500x' in large gold text, and a red/gold 'CLICK TO START' button.",
      "purpose": "Introduces the two headline mechanics (Lucky Spins gamble round, Stacked/Replicate Wilds) and the max win before entry.",
      "color_blind_notes": "Feature names are captioned in plain text under each illustration; max-win figure is large high-contrast gold-on-dark text."
    },
    "base_game": {
      "type": "base_game",
      "layout": "5x3 reel grid centered on screen, gold rounded frame, no side ornamentation/theme art (plain magenta/burgundy background with soft sparkle particles).",
      "title_banner": "Wordmark 'Four Lucky Diamonds' directly above the reel frame.",
      "bottom_bar": {
        "left": "Round 'i' info button (opens paytable/rules) and a gear-shaped Settings button.",
        "balance_and_bet": "'Balance <amount> FUN' label and, center, 'Total bet <amount> FUN' with small up/down triangle arrows to its right for bet adjustment.",
        "right": "A circular autoplay icon marked 'A', and a larger circular spin icon (two curved arrows forming a loop) to start the reels.",
        "top_right_corner": "Small speaker/mute icon and an in-game clock/timestamp; a vertical repeat of the game title runs down the far right edge of the screen."
      },
      "color_blind_notes": "Controls are white/light-grey glyphs on dark backgrounds (shape-based icons: gear, speaker, circular arrows), not reliant on color coding."
    },
    "base_game_win": {
      "type": "base_game",
      "content": "A 3-of-a-kind win on Line 8 (top-left, top-middle, then dipping into the middle row on reel 3 per the staircase payline shape) with 3 pink/magenta rectangular gems, each glowing with a sparkling gold tile highlight; a small callout bubble reads '0.20' over the winning symbols. Bottom bar shows 'Total bet 0.20 FUN', 'Line 8 pays', 'Total win: 0.20 FUN'.",
      "purpose": "Used as the reference frame to establish the payout basis (see payout_basis above)."
    },
    "bet_min": {"type": "base_game", "content": "Bet lowered to the floor via the '-' control: 'Total bet 0.20 FUN'; the down-pointing bet arrow is visibly greyed out/disabled."},
    "bet_max": {"type": "base_game", "content": "Bet raised to the ceiling via the '+' control: 'Total bet 50.00 FUN'."},
    "paytable": {
      "type": "paytable",
      "pages": "7 pages total (thinned from a longer raw scroll capture), reached via the round 'i' info button.",
      "page_1": "Wild symbol icon + description, then the top 6 paying symbols in a 2-row grid (Heart, 7, Bell / Star, orange gem, green gem) with their 5/4/3-of-a-kind payouts.",
      "page_2": "Continues into the bottom 3 paying symbols (red, pink, blue rectangular gems) then begins the 'Features' section with the 'Lucky spins' heading and trigger text.",
      "page_3": "Illustrates the Lucky Spins transition (single board with 'x4' multiplier badge morphing into the four numbered mini-boards) then begins 'Stacked wild' text with an illustration of Wilds on the 3rd reel of a 5-reel bonus board.",
      "page_4": "Continues the Stacked Wild illustration, then 'Replicate stacked wild' heading with description and an arrow-diagram illustration showing Wild duplication between two mini-boards.",
      "page_5": "Continues the Replicate Stacked Wild illustration, then the 'Lines' heading begins with diagrams for Line 1 - Line 4.",
      "page_6": "Continues the 'Lines' diagrams (compact form) for Lines 1-4 shown again in full grid layout.",
      "page_7": "Complete compact grid of all 10 payline diagrams (Line 1 through Line 10), each as a 3-row x 5-column highlighted cell pattern (see paylines_diagram above).",
      "navigation": "Three small icons on the far left edge of the panel (a coin/refund-looking icon, a target-like icon, and a '?' icon). The first two both open this same paytable panel with no visible functional difference; the '?' opens the separate Rules panel. Panel scrolls vertically; closed via an 'X' at the top-right."
    },
    "rules": {
      "type": "rules",
      "pages": "14 pages, opened via the '?' icon (separate from the paytable 'i' icon).",
      "sections_in_order": [
        "About the Game (flavour text)",
        "How to play (bet field, Spin button)",
        "Autospins (settings, all 5 stop-conditions listed verbatim: on any win / if bonus game is won / if single win exceeds / if cash balance increases by / if cash balance decreases by)",
        "Features: Wild Symbol (bonus-only), Lucky Spins (trigger + gamble framing + Collect button), Stacked Wild, Replicate Stacked Wild (full duplication rule table)",
        "Bonus round (detailed economics: 4-board layout, Winning field, Lucky bet field, per-spin decrement/increment mechanics, 50-spin cap, end conditions)",
        "Spin Results (win evaluation rules, 'only the highest win is paid on each active payline', pointer to Information/Payments button for the paytable)",
        "Settings (Quick spin license-dependent availability, Spacebar to spin, volume/music/SFX toggles)",
        "Return to Player (RTP 92.84-94.03% depending on strategy)",
        "RNG (certified RNG statement)",
        "Additional information (malfunction clause, 24-hour unfinished-round auto-Collect policy, no-risk-action assumption, rules version 1.0 dated February 12, 2021 / Game Version 1.0.0)"
      ]
    },
    "settings": {
      "type": "settings",
      "title": "Settings",
      "content": "Small centered dark panel over the dimmed reels. Two checkboxes: 'Quick spin' (unchecked, label greyed — appears disabled, consistent with the license-dependent note in rules_p10) and 'Spacebar to spin' (checked). An 'Audio' sub-heading with a horizontal Volume slider (set roughly 3/4 toward maximum) and two further checkboxes, 'Music' and 'Sound FX' (both checked). Closed via an 'X' at the top-right of the panel."
    },
    "autoplay": {
      "type": "autoplay",
      "title": "Autospin settings",
      "content": "Panel titled 'Autospin settings' with an 'Advanced' expandable section (shown expanded) containing: 'Enable quick spin' checkbox (unchecked/greyed, same license caveat as Settings), and a 'Numbers of rounds' grid of preset buttons: 10, 25, 50, 100, 250, 500, 750, 1000, and an infinity symbol (unlimited)."
    }
  },

  "accessibility_observations": {
    "screen_reader": "Control layout is stable across screens: info/settings icons bottom-left, balance/bet readouts bottom-center, autoplay+spin bottom-right. The paytable and rules booklets are both linear, page-numbered (though page numbers are not printed as 'Page N/M' text in this build, they scroll as a continuous sheet), sequentially scrollable panels.",
    "motor": "Bet adjustment uses small +/- arrow hitboxes next to the bet readout; the Spin control is a large circular target. Autoplay with preset round counts (10 up to unlimited) reduces the number of required interactions for repeat play. Inside the Lucky Spins bonus, an autospin option is also available so a motor-impaired player is not forced to click every bonus spin manually.",
    "color_blind": "Every paying symbol is distinguishable by outline SHAPE (heart, digit '7', bell, star, three different gem-cut shapes: round/citrine, triangular, rectangular) independent of hue. The three lowest-value gems share one rectangular shape and pay identically regardless of their color (red/pink/blue), so no color discrimination is required to judge their value. Payline diagrams (paytable pages 5-7) are rendered as filled/unfilled grid cells (orange-filled vs grey-empty) — position/fill state carries the information, not hue alone, though the fill color itself (orange on dark grey) has reasonable contrast for most color-vision types.",
    "deaf_hard_of_hearing": "No information observed to be conveyed by audio alone; all game state (Lucky spins counter, Winnings, Total win, spin results) is shown as on-screen text/graphics. Music and Sound FX are independently toggleable and fully optional per the Settings panel."
  },

  "anomalies_and_notes": [
    "The Wild symbol is explicitly bonus-round-only per both the paytable text and the rules booklet — it never appears in the base game. This is unusual for the genre and is documented rather than assumed to be an oversight.",
    "The Lucky Spins bonus is architecturally a gamble/double-or-nothing style round (spendable pot funded from the qualifying win, optional continuation, Collect at any time) rather than a classic free-spins feature; manifest correctly marks features_present.free_spins = false.",
    "No bonus buy exists in this game.",
    "No line-count or bet-mode selector exists; 10 lines are always active.",
    "Demo currency is FUN (BGaming demo convention), not a capture error.",
    "Quick Spin is shown present-but-disabled in both Settings and Autospin panels, consistent with the in-game text noting it 'may not be available' depending on license requirements for the session/jurisdiction being served."
  ],

  "unreadable_or_uncertain": [
    "Volatility rating is not stated anywhere in the captured splash/paytable/rules screens (no flame-icon indicator, no text label) — left uncertain, not invented.",
    "Whether 'Game Version 1.0.0' / rules document date (February 12, 2021) reflects the true original release date of the game itself, or only the current rules-document revision, is not established from these frames alone.",
    "The exact algorithm behind how many autospins are offered inside the Lucky Spins bonus ('calculated according to the winnings and the bet') is described only qualitatively in the rules text; no formula or worked example is shown on any captured frame."
  ]
}

API documentation for this slot

Ready-to-run request examples in curl, Python, JavaScript & PHP — plus the full structured-data field reference for this exact slot, on GitHub.