Flip Flap
Single-player pinball in a 1960s railway hall.
Multiball, EXPRESS prize on the board
1 / 5- RTP
- 96.50%
- Both modes, exact
- Max win
- 5,000x
- Both modes
- Hit rate
- 1 in 2.56
- Base mode
- Modes
- 2
- Base 1x, Multiball 100x
The demo runs the real game build with play money and a sample of the published books.
Overview
Each play launches a ball onto a brass-and-enamel table. The flippers play by themselves while bumpers, slingshots, a spinner, drop targets, a loop line and a rail ramp fill the pot.
Light the ladder with the ramp, the ticket scoop or a full bank of targets, and the pot is multiplied by up to x10 when the last ball drains. The split-flap departure board announces every prize. Lock two balls or hit MULTIBALL on the board and every value doubles.
“Express”, not “jackpot”
The multiball scoop pays a fixed prize from the book like any other prize. The board says EXPRESS so it never reads as a jackpot feature, which Engine does not allow.
- Pre-simulated runsThe client never runs physics. It draws the keyframes stored in the book, so play, resume and replay show the same run and payout on every device.
- Replay modeAny event id plays back in full with no bet UI and no wallet calls.
- TurboFast play stays legible: board messages queue and hold 1.6 s of real time.
- Desktop, mobile, popoutLayout tested at 8 sizes from 320×568 to 1920×1080 plus a 400×225 popout.
- Bet levels and currencies36 bet levels, tested in USD and JPY. Wins on bets under 0.10 show up to 4 decimals.
- Social casino wordingsocial=true switches all 116 strings to the sweeps set; a check blocks every restricted phrase.
- Sound offOne control, and it stays off across rounds.
- No autoplay in v1Left out on purpose; Engine requires a confirmation flow for it.
- Provider
- Orrery Studio
- Type
- Pinball, single player
- Distribution
- Engine (formerly Stake Engine)
- RTP
- 96.50%
- Max win
- 5,000x
- Modes
- Base 1x · Multiball 100x
- Round length
- 5–45 s
- Bet levels
- 36
- Platforms
- Desktop, mobile, popout
- Language
- English
- Release date
- TBD
Math
Where the 96.50% comes from
| Mode | Books | RTP | Paying runs | Std / cost | Max win | CVaR 0.1% |
|---|---|---|---|---|---|---|
| Base | 324,050 | 96.500000% | 1 in 2.56 | 14.03 | 5,000x | 253 |
| Multiball | 39,550 | 96.500000% | every run (min 5x) | 1.99 | 5,000x | 33.5 |
| Win band | Share of RTP | RTP points | Frequency |
|---|---|---|---|
| 0 | 0.00 | 1 in 1.6 | |
| 0.1–1x | 9.78 | 1 in 4.0 | |
| 1–5x | 29.84 | 1 in 8.3 | |
| 5–25x | 22.38 | 1 in 55.5 | |
| 25–100x | 13.53 | 1 in 400 | |
| 100–1,000x | 17.60 | 1 in 2,220 | |
| 1,000–5,000x | 2.98 | 1 in 83.3k | |
| 5,000x | 0.40 | 1 in 1.25M |
Source: Flip Flap math report (math/out/report.md), verified 7 Oct 2026. The losing band is 60.9% of base runs.
| Win band | Share of RTP | RTP points | Frequency |
|---|---|---|---|
| 5–25x | 5.49 | 1 in 2.4 | |
| 25–100x | 20.86 | 1 in 2.9 | |
| 100–1,000x | 60.86 | 1 in 4.2 | |
| 1,000–5,000x | 8.73 | 1 in 248 | |
| 5,000x | 0.56 | 1 in 9,020 |
Source: Flip Flap math report (math/out/report.md), verified 7 Oct 2026. Multiball runs always pay at least 5x.
Review events
Replay the book behind each outcome
The most likely book in each outcome class, as listed for Engine’s reviewers. Each one opens in the real client.
| Mode | Outcome | Event id | Pays | Replay |
|---|---|---|---|---|
| Base | Loss | 220744 | 0x | Replay |
| Base | Normal win | 938 | 4.8x | Replay |
| Base | Big win | 80113 | 784.5x | Replay |
| Base | Max win | 5716 | 5,000x | Replay |
| Base | Multiball trigger | 13480 | 4.8x | Replay |
| Multiball | Lowest result | 17994 | 40x | Replay |
| Multiball | Normal win | 1306 | 100x | Replay |
| Multiball | Big win | 27130 | 3,820x | Replay |
| Multiball | Max win | 1624 | 5,000x | Replay |
Assets
