Balloon Party slot: RTP and max win
Balloon Party is a high-volatility slot by Kek Studios on Stake Engine, released 17 Sep 2026. Its base game returns 96.70%, above the median Engine slot (96.02%) and higher than 86% of them. The top payout is 25,000× the bet, bigger than 81% of Engine slots; from a base spin it lands about once every 823,422 spins. It has 6 bonus buys priced at 25× to 500× the bet; the best returns 96.70%, so each buy costs 0.83× the bet on average over the long run. It is the No. 5552 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 | |
|---|---|---|---|---|---|---|---|---|---|
| Base | Base spin | 1.00× | 96.70% | 25,000× | 1 in 823,422 | 1 in 4.64 | 1 in 12 | 0.03× base | Simulate |
| Bonus Boost | Boosted spin | 3.00× | 96.70% | 25,000× | 1 in 141,647 | 1 in 4.90 | 1 in 19 | 0.10× base | Simulate |
| Super Bonus Boost | Boosted spin | 10× | 96.70% | 25,000× | 1 in 18,685 | 1 in 4.97 | 1 in 27 | 0.33× base | Simulate |
| Dart Attack | Bonus buy | 25× | 96.70% | 25,000× | 1 in 8,299,062 | 1 in 1.28 | 1 in 4.59 | 0.83× base | Simulate |
| Encore | Bonus buy | 50× | 96.70% | 25,000× | 1 in 8,824 | 1 in 1.47 | 1 in 8.47 | 1.65× base | Simulate |
| Full Pressure | Bonus buy | 50× | 96.70% | 25,000× | 1 in 24,924 | 1 in 1.36 | 1 in 5.07 | 1.65× base | Simulate |
| Big Balloon | Bonus buy | 100× | 96.70% | 25,000× | 1 in 2,420 | 1 in 1.14 | 1 in 8.31 | 3.30× base | Simulate |
| Super | Bonus buy | 200× | 96.70% | 25,000× | 1 in 909 | – | 1 in 7.81 | 6.60× base | Simulate |
| Mystery Spin | Bonus buy | 500× | 96.70% | 25,000× | 1 in 267 | 1 in 1.20 | 1 in 9.87 | 16.50× base | Simulate |
Work out the cost of Balloon Party 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 | 96.700% | Active |
Frequently asked
What is the RTP of Balloon Party?
Base spins return 96.70% of the amount wagered over the long run, from the published outcome table for version 2. All 6 of its bonus buys return 96.70%.
What is the max win in Balloon Party and how likely is it?
The top payout is 25,000× the base bet. On a base spin it lands 1 in 823,422 spins. In the Dart Attack buy (25×) 25,000× lands 1 in 8,299,062 buys.
Does Balloon Party have a bonus buy, and what does it cost?
Yes, 6 buy modes. Dart Attack: 25× the base bet, 96.70% RTP, an expected cost of 0.83× the base bet per buy. Encore: 50× the base bet, 96.70% RTP, an expected cost of 1.65× the base bet per buy. Full Pressure: 50× the base bet, 96.70% RTP, an expected cost of 1.65× the base bet per buy. Big Balloon: 100× the base bet, 96.70% RTP, an expected cost of 3.30× the base bet per buy. Super: 200× the base bet, 96.70% RTP, an expected cost of 6.60× the base bet per buy. Mystery Spin: 500× the base bet, 96.70% RTP, an expected cost of 16.50× the base bet per buy.
Is Balloon Party high or low volatility?
High. Its base-mode standard deviation is 46.1× 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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