Toxic Tombs slot: RTP and max win
Toxic Tombs is a low-volatility slot by WildByte on Stake Engine, released 14 Sep 2026. Its base game returns 96.50%, above the median Engine slot (96.02%) and higher than 66% of them. The top payout is 5,000× the bet; from a base spin it lands about once every 2,500,000 spins. It has 4 bonus buys priced at 25× to 200× the bet; the best returns 96.50%, so each buy costs 0.88× the bet on average over the long run. It is the No. 3637 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× | 96.50% | 5,000× | 1 in 2,500,000 | 1 in 3.16 | 1 in 70 | 0.04× base | Simulate |
| Ante | Boosted spin | 1.50× | 96.50% | 5,000× | 1 in 1,666,667 | 1 in 2.92 | 1 in 39 | 0.05× base | Simulate |
| Feature One | Boosted spin | 5.00× | 96.50% | 5,000× | 1 in 500,000 | 1 in 2.39 | 1 in 28 | 0.18× base | Simulate |
| Feature Three | Bonus buy | 25× | 96.50% | 5,000× | 1 in 100,000 | 1 in 2.19 | 1 in 11 | 0.88× base | Simulate |
| Bonus | Bonus buy | 50× | 96.50% | 5,000× | 1 in 10,000 | every round | 1 in 6.37 | 1.75× base | Simulate |
| Feature Mega | Bonus buy | 100× | 96.50% | 5,000× | 1 in 25,000 | 1 in 1.98 | 1 in 6.12 | 3.50× base | Simulate |
| Super Bonus | Bonus buy | 200× | 96.50% | 5,000× | 1 in 833 | every round | 1 in 3.52 | 7.00× base | Simulate |
Work out the cost of Toxic Tombs 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 | 96.500% | Active |
Frequently asked
What is the RTP of Toxic Tombs?
Base spins return 96.50% of the amount wagered over the long run, from the published outcome table for version 1. All 4 of its bonus buys return 96.50%.
What is the max win in Toxic Tombs and how likely is it?
The top payout is 5,000× the base bet. On a base spin it lands 1 in 2,500,000 spins. In the Feature Three buy (25×) 5,000× lands 1 in 100,000 buys.
Does Toxic Tombs have a bonus buy, and what does it cost?
Yes, 4 buy modes. Feature Three: 25× the base bet, 96.50% RTP, an expected cost of 0.88× the base bet per buy. Bonus: 50× the base bet, 96.50% RTP, an expected cost of 1.75× the base bet per buy. Feature Mega: 100× the base bet, 96.50% RTP, an expected cost of 3.50× the base bet per buy. Super Bonus: 200× the base bet, 96.50% RTP, an expected cost of 7.00× the base bet per buy.
Is Toxic Tombs high or low volatility?
Low. Its base-mode standard deviation is 10.4× 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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