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Chess is a high-volatility slot by NSTech on Stake Engine, released 6 May 2026. Its base game returns 96.00%, below the median Engine slot (96.02%). The top payout is 20,000× the bet, bigger than 59% of Engine slots; from a base spin it lands about once every 500,000 spins. It has 2 bonus buys priced at 200× to 1,000× the bet; the best returns 95.78%, so each buy costs 42× the bet on average over the long run.
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× | 96.00% | 20,000× | 1 in 500,000 | 1 in 5.28 | 1 in 8.53 | 0.04× base | Simulate |
| Bonus | Bonus buy | 200× | 95.56% | 20,000× | 1 in 13,636 | 1 in 1.01 | 1 in 5.20 | 8.89× base | Simulate |
| God Mode | Bonus buy | 1,000× | 95.78% | 20,000× | 1 in 75 | 1 in 9.88 | 1 in 11 | 42.15× base | Simulate |
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 | 96.000% | Active |
Frequently asked
What is the RTP of Chess?
Base spins return 96.00% of the amount wagered over the long run, from the published outcome table for version 1. Its bonus buys return between 95.56% and 95.78%.
What is the max win in Chess and how likely is it?
The top payout is 20,000× the base bet. On a base spin it lands 1 in 500,000 spins. In the God Mode buy (1,000×) 20,000× lands 1 in 75 buys.
Does Chess have a bonus buy, and what does it cost?
Yes, 2 buy modes. Bonus: 200× the base bet, 95.56% RTP, an expected cost of 8.89× the base bet per buy. God Mode: 1,000× the base bet, 95.78% RTP, an expected cost of 42.15× the base bet per buy.
Is Chess high or low volatility?
High. Its base-mode standard deviation is 50.3× 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.
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