Rattle Crown slot: RTP and max win
Rattle Crown is a high-volatility slot by Velnixa Games on Stake Engine, released 1 Oct 2026. Its base game returns 94.38%, below the median Engine slot (96.02%). The top payout is 10,000× the bet; from a base spin it lands about once every 1,000,011 spins. It has 4 bonus buys priced at 50× to 500× the bet; the best returns 94.39%, so each buy costs 5.61× the bet on average over the long run. It is the No. 2107 most played Engine slot over the last 30 days.
Every mode, side by side
Costs are multiples of the base bet. Odds come from the published outcome table for v1. "Returns the cost" counts rounds that pay back at least what the mode cost. Expected cost is cost × (1 − RTP): the average amount lost per round over the long run.
| Mode | Type | Cost | RTP | Max win | Max win odds | Pays anything | Returns the cost | Expected cost per round | |
|---|---|---|---|---|---|---|---|---|---|
| Base | Base spin | 1.00× | 94.38% | 10,000× | 1 in 1,000,011 | 1 in 2.76 | 1 in 11 | 0.06× base | Simulate |
| Ante | Boosted spin | 3.00× | 94.32% | 10,000× | 1 in 500,075 | 1 in 2.27 | 1 in 10 | 0.17× base | Simulate |
| Full Screen | Bonus buy | 50× | 94.35% | 10,000× | 1 in 100,001 | 1 in 1.03 | 1 in 3.70 | 2.83× base | Simulate |
| Bonus | Bonus buy | 100× | 94.39% | 10,000× | 1 in 100,001 | 1 in 1.03 | 1 in 3.69 | 5.61× base | Simulate |
| Super Bonus | Bonus buy | 200× | 94.35% | 10,000× | 1 in 50,001 | 1 in 1.03 | 1 in 3.68 | 11.30× base | Simulate |
| Epic Bonus | Bonus buy | 500× | 94.36% | 10,000× | 1 in 33,334 | 1 in 1.03 | 1 in 3.69 | 28.23× base | Simulate |
Work out the cost of Rattle Crown bonus buys at your bet size
Version history
Base-mode RTP per published math version. Older versions stay public in the fairness API, so changes can be checked.
| Version | Base RTP | |
|---|---|---|
| v1 | 94.381% | Active |
Frequently asked
What is the RTP of Rattle Crown?
Base spins return 94.38% of the amount wagered over the long run, from the published outcome table for version 1. Its bonus buys return between 94.35% and 94.39%.
What is the max win in Rattle Crown and how likely is it?
The top payout is 10,000× the base bet. On a base spin it lands 1 in 1,000,011 spins. In the Bonus buy (100×) 10,000× lands 1 in 100,001 buys.
Does Rattle Crown have a bonus buy, and what does it cost?
Yes, 4 buy modes. Full Screen: 50× the base bet, 94.35% RTP, an expected cost of 2.83× the base bet per buy. Bonus: 100× the base bet, 94.39% RTP, an expected cost of 5.61× the base bet per buy. Super Bonus: 200× the base bet, 94.35% RTP, an expected cost of 11.30× the base bet per buy. Epic Bonus: 500× the base bet, 94.36% RTP, an expected cost of 28.23× the base bet per buy.
Is Rattle Crown high or low volatility?
High. Its base-mode standard deviation is 48.2× the bet, which puts it in the highest third of Engine games. What volatility means.
Can I check that a result was fair?
Yes. Engine games use provably fair seeds. Once your server seed is revealed you can replay any round against the published outcome table. See how to verify a result.
Slots with similar math to Rattle Crown
Matched on volatility, max win, RTP and whether there's a bonus buy. Not on theme.
Dumpster Diamond HeistBrambleVolt Games RTP94.35%Max win10,000×Volatility
Venom NestSPIDEXA GAMES RTP94.52%Max win10,000×Volatility
Black Hole BazaarZAVO GAMES RTP94.54%Max win10,000×Volatility
Demolition CrewNOVAK VOLT RTP93.96%Max win10,000×Volatility
Caught Red HandedMental Machines RTP95.00%Max win10,000×Volatility
GrubstakeSupergaming RTP94.50%Max win20,000×Volatility