Heimdall's Watch slot: RTP and max win
Heimdall's Watch is a high-volatility slot by Blooball Gaming on Stake Engine, released 28 Sep 2026. Its base game returns 96.00%, below the median Engine slot (96.02%). The top payout is 50,000× the bet, bigger than 97% of Engine slots; from a base spin it lands about once every 4,999,942 spins. It has 6 bonus buys priced at 200× to 1,000× the bet; the best returns 96.00%, so each buy costs 8.00× the bet on average over the long run. It is the No. 1740 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 v8. "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% | 50,000× | 1 in 4,999,942 | 1 in 2.20 | 1 in 11 | 0.04× base | Simulate |
| Ante | Boosted spin | 3.00× | 96.00% | 50,000× | 1 in 999,999 | 1 in 2.16 | 1 in 26 | 0.12× base | Simulate |
| Super Ante | Boosted spin | 6.00× | 96.00% | 50,000× | 1 in 999,998 | 1 in 2.16 | 1 in 41 | 0.24× base | Simulate |
| Mode Heimdall | Bonus buy | 200× | 96.00% | 5,137× | 1 in 155,672 | every round | 1 in 3.66 | 8.00× base | Simulate |
| Mode Gods Spin | Bonus buy | 250× | 96.00% | 16,794× | 1 in 1,641,000 | every round | 1 in 3.73 | 10.00× base | Simulate |
| Mode Thor | Bonus buy | 300× | 96.00% | 50,000× | 1 in 40,000 | – | 1 in 4.58 | 12.00× base | Simulate |
| Mode Loki | Bonus buy | 500× | 96.00% | 50,000× | 1 in 20,000 | every round | 1 in 4.09 | 20.00× base | Simulate |
| Mode Mystery | Bonus buy | 500× | 96.00% | 50,000× | 1 in 50,000 | 1 in 1.47 | 1 in 4.01 | 20.00× base | Simulate |
| Mode Ragnarok | Bonus buy | 1,000× | 96.00% | 50,000× | 1 in 10,000 | – | 1 in 2.90 | 40.00× base | Simulate |
Work out the cost of Heimdall's Watch 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 | |
|---|---|---|
| v8 | 96.000% | Active |
| v7 | 96.000% |
Frequently asked
What is the RTP of Heimdall's Watch?
Base spins return 96.00% of the amount wagered over the long run, from the published outcome table for version 8. All 6 of its bonus buys return 96.00%.
What is the max win in Heimdall's Watch and how likely is it?
The top payout is 50,000× the base bet. On a base spin it lands 1 in 4,999,942 spins. In the Mode Heimdall buy (200×) 5,137× lands 1 in 155,672 buys.
Does Heimdall's Watch have a bonus buy, and what does it cost?
Yes, 6 buy modes. Mode Heimdall: 200× the base bet, 96.00% RTP, an expected cost of 8.00× the base bet per buy. Mode Gods Spin: 250× the base bet, 96.00% RTP, an expected cost of 10.00× the base bet per buy. Mode Thor: 300× the base bet, 96.00% RTP, an expected cost of 12.00× the base bet per buy. Mode Loki: 500× the base bet, 96.00% RTP, an expected cost of 20.00× the base bet per buy. Mode Mystery: 500× the base bet, 96.00% RTP, an expected cost of 20.00× the base bet per buy. Mode Ragnarok: 1,000× the base bet, 96.00% RTP, an expected cost of 40.00× the base bet per buy.
Is Heimdall's Watch high or low volatility?
High. Its base-mode standard deviation is 31.1× 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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