01Live demo
Try it in a casino lobby
Events from the gamewaiting for ready
Try it live: https://baizestudio.com/for-casinos/mint-mark
02The game
How it plays, and where it fits.
The game
- What the player does
- Seven reels and seven rows of die-struck coins, scales, dies and ingots pay in clusters of five or more. Winning clusters tumble away, and every position they covered is struck by the press: a second win there is x2, and each win after doubles it. Press seals start free spins where the plate is never cleared.
- Why players come back
- Every win leaves a mark that makes the next win on that spot bigger, so a board can heat up in one spin, and in free spins it keeps heating up. Features arrive about once in 101 spins.
- Round structure
- Spin with tumbles and a feature. One press spins; tumbles and any free spins play out on their own and the round settles once.
- Session fit
- Medium to long sessions. Single player. Good to watch: built for streams.
- Stakes in this build
- 0.20 to 100 demo credits. 0.20 to 100.00 per spin on a fixed bet ladder; the bonus buy costs 51 times the bet.
In your lobby
- Lobby category
- Slots: 7x7 cluster pays with tumbles, multiplier spots and free spins
- Suggested placements
- Slots lobby
- New-games rail
- Tournaments on biggest single win
- Streamer and creator campaigns
- Features
- 7x7 cluster pays, 5 or more touching, with tumbles
- Assay marks: struck spots double from x2 up to x16 (x32 in free spins), added up under a cluster
- Free spins keep every mark for the whole feature; press seals strike their spots too
- Bonus buy at 51x the bet with the same return as the base game
- Max win 5,000x the bet
- Auto play with stop rules
- Quick play, slam stop and keyboard play
- Resumes a feature after a reload
- Devices and sizes
- Desktop and phone, portrait and landscape. WebGL2 reels with a Canvas fallback; flipbooks and the room load after the first frame. Fills any iframe from 320x480 up; checked at 1920x1080, 1280x720, 1024x768, 800x600, 844x390, 390x844 and 360x640.
03The maths
Every number, from the code.
| Mode | RTP | House edge | Hit rate | Net win | Volatility (SD) | Max win | GGR / 1,000 rounds |
|---|---|---|---|---|---|---|---|
| One spin (default 96% maths) headline | 95.97% | 4.03% | 37.73% | 18.53% | High (14.77) | 5,000× | 40.30 |
| Bonus buy at 51x the bet | 95.94% | 4.06% | 99.74% | 20.30% | Medium (2.65) | 98.04× | 40.64 |
RTP variants
Three builds of the same game: the reels, tumbles, Assay marks and feature are identical; only pay values change. Each has its own PAR sheet (CSV and JSON) with reel strips, symbol counts, every pay cell’s frequency and contribution, the win distribution and the simulation record.
| Variant | RTP | Base / free spins | Bonus buy | Hit rate | SD | Free spins | Max win |
|---|---|---|---|---|---|---|---|
| 96% default | 95.97% ± 0.08 | 45.7% / 50.2% | 51× → 95.94% | 37.7% | 14.77 | 1 in 101 | 1 in 2.7M |
| 94% | 93.91% ± 0.10 | 44.8% / 49.1% | 51× → 93.84% | 37.7% | 14.40 | 1 in 101 | 1 in 2.9M |
| 92% | 91.98% ± 0.10 | 43.9% / 48.1% | 51× → 91.88% | 37.7% | 14.17 | 1 in 101 | 1 in 3.1M |
Free spins by award
| Seals | Spins | Average feature win | SD | Retrigger rate |
|---|---|---|---|---|
| 3 | 10 | 48.93× | 136.7 | 38.46% |
| 4 | 12 | 75.30× | 182.2 | 46.11% |
| 5 | 15 | 131.36× | 266.0 | 57.66% |
How the numbers were made: the base game alone over 400,000,000 spins plus each free-spins award alone over 20,000,000 features (95% interval 95.89% to 96.05%), confirmed by 1,000,000,000 straight spins at 95.98%. The first-drop odds of 3 or more Press seals are also computed exactly over every stop combination (1 in 122, before tumbles). Wins are whole cents at every bet on the ladder (pays are multiples of 0.05x and bets of 0.20), the max win of 5,000x ends a round, and the outcome engine is a pure function of a 32-bit random stream, ready for the Baize RGS.
Pace
1.8 s a round, about 2,034 rounds an hour. Measured in Chrome with every control pressed as soon as it was enabled, so this is a ceiling with no thinking time.
GGR / 1,000 rounds is the theoretical gross gaming revenue from 1,000 rounds at a total stake of 1.00: house edge × 1,000. Volatility is the standard deviation of one round’s total return per 1.00 of total stake. Low under 1.5, Medium 1.5 to under 5, High 5 to under 15, Very high 15 and over. For scale: an even-money roulette bet is 1.00, a straight-up number 5.84.
04Configuration
Configuration and status
Operator settings today
- Launch parameters: lobby URL for the home button, starting sound, the UK profile (
?jurisdiction=uk) - Frame size and sandbox attributes
- Framing allowlist for your domains (set by Baize per deployment)
On request
- Stake limits and quick stake values
- Currency label and decimals
- RTP: 96% (default), 94% and 92% are built and measured, each with its own PAR sheet: pay values change, reels and features do not.
Demo-credit build, not certified. Outcomes are drawn in the player’s browser today; real-money play needs server-side outcomes. See status for what real-money use needs.