Zombie Bonkers slot: RTP and max win
Zombie Bonkers is a low-volatility slot by Blueberry Games on Stake Engine, released 24 Jun 2026. Its base game returns 96.00%, below the median Engine slot (96.02%). The top payout is 6,000× the bet; from a base spin it lands about once every 6,000,000 spins. It has 2 bonus buys priced at 250× to 500× the bet; the best returns 96.00%, so each buy costs 10× the bet on average over the long run. It is the No. 6284 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 v3. "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% | 6,000× | 1 in 6,000,000 | 1 in 2.76 | 1 in 9.79 | 0.04× base | Simulate |
| Bonus | Bonus buy | 250× | 96.00% | 6,000× | 1 in 2,400 | every round | 1 in 4.03 | 10.00× base | Simulate |
| Super Bonus | Bonus buy | 500× | 96.00% | 6,000× | 1 in 240 | every round | 1 in 3.76 | 20.00× base | Simulate |
Work out the cost of Zombie Bonkers 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 | |
|---|---|---|
| v3 | 96.000% | Active |
Frequently asked
What is the RTP of Zombie Bonkers?
Base spins return 96.00% of the amount wagered over the long run, from the published outcome table for version 3. All 2 of its bonus buys return 96.00%.
What is the max win in Zombie Bonkers and how likely is it?
The top payout is 6,000× the base bet. On a base spin it lands 1 in 6,000,000 spins. In the Bonus buy (250×) 6,000× lands 1 in 2,400 buys.
Does Zombie Bonkers have a bonus buy, and what does it cost?
Yes, 2 buy modes. Bonus: 250× the base bet, 96.00% RTP, an expected cost of 10.00× the base bet per buy. Super Bonus: 500× the base bet, 96.00% RTP, an expected cost of 20.00× the base bet per buy.
Is Zombie Bonkers high or low volatility?
Low. Its base-mode standard deviation is 6.1× 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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