Number Reels slot: RTP and max win
Number Reels is a low-volatility slot by Cobalt Hollow on Stake Engine, released 24 Jun 2026. Its base game returns 96.09%, above the median Engine slot (96.02%) and higher than 53% of them. The top payout is 9,999× the bet. It has 4 bonus buys priced at 50× to 1,000× the bet; the best returns 96.52%, so each buy costs 5.22× the bet on average over the long run. It is the No. 6612 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 v2. "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 | |
|---|---|---|---|---|---|---|---|---|---|
| Easy | Base spin | 1.00× | 96.09% | 9.00× | 1 in 26 | 1 in 7.39 | 1 in 7.39 | 0.04× base | Simulate |
| Extrem | Base spin | 1.00× | 96.42% | 9,999× | 1 in 5,000,000 | 1 in 7.00 | 1 in 7.00 | 0.04× base | Simulate |
| Hard | Base spin | 1.00× | 96.08% | 999× | 1 in 2,500,000 | 1 in 7.27 | 1 in 7.27 | 0.04× base | Simulate |
| Medium | Base spin | 1.00× | 96.22% | 99× | 1 in 2,500,000 | 1 in 7.16 | 1 in 7.16 | 0.04× base | Simulate |
| Guaranteed End | Bonus buy | 50× | 96.16% | 9,999× | 1 in 6,000,000 | – | 1 in 65 | 1.92× base | |
| Last Two Guaranteed | Bonus buy | 150× | 96.52% | 9,999× | 1 in 2,500,000 | – | 1 in 47 | 5.22× base | Simulate |
| Clone | Bonus buy | 400× | 96.06% | 9,999× | 1 in 39,062 | 1 in 8.69 | 1 in 8.69 | 15.76× base | Simulate |
| Max Win | Bonus buy | 1,000× | 96.00% | 9,999× | 1 in 25 | 1 in 6.03 | 1 in 6.03 | 40.04× base | Simulate |
Work out the cost of Number Reels 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 | |
|---|---|---|
| v2 | 96.093% | Active |
Frequently asked
What is the RTP of Number Reels?
Base spins return 96.09% of the amount wagered over the long run, from the published outcome table for version 2. Its bonus buys return between 96.00% and 96.52%.
What is the max win in Number Reels and how likely is it?
The top payout is 9,999× the base bet. On a base spin the top payout of 9.00× lands 1 in 26 spins. In the Last Two Guaranteed buy (150×) 9,999× lands 1 in 2,500,000 buys.
Does Number Reels have a bonus buy, and what does it cost?
Yes, 4 buy modes. Guaranteed End: 50× the base bet, 96.16% RTP, an expected cost of 1.92× the base bet per buy. Last Two Guaranteed: 150× the base bet, 96.52% RTP, an expected cost of 5.22× the base bet per buy. Clone: 400× the base bet, 96.06% RTP, an expected cost of 15.76× the base bet per buy. Max Win: 1,000× the base bet, 96.00% RTP, an expected cost of 40.04× the base bet per buy.
Is Number Reels high or low volatility?
Low. Its base-mode standard deviation is 5.5× the bet, which puts it in the lowest 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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