Iron Warden slot: RTP and max win
Iron Warden is a medium-volatility slot by Emporium on Stake Engine, released 25 Aug 2026. Its base game returns 96.51%, above the median Engine slot (96.02%) and higher than 82% of them. The top payout is 20,000× the bet, bigger than 59% of Engine slots; from a base spin it lands about once every 8,333,333 spins. It has 5 bonus buys priced at 50× to 1,000× the bet; the best returns 96.46%, so each buy costs 1.77× the bet on average over the long run. It is the No. 2161 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× | 96.51% | 20,000× | 1 in 8,333,333 | 1 in 2.53 | 1 in 3.93 | 0.03× base | Simulate |
| Wardens Oath | Boosted spin | 3.00× | 96.02% | 20,000× | 1 in 8,333,333 | 1 in 2.53 | 1 in 7.47 | 0.12× base | Simulate |
| Iron Trial | Bonus buy | 50× | 96.46% | 20,000× | 1 in 8,333,333 | – | 1 in 2.80 | 1.77× base | Simulate |
| Rampart Raid | Bonus buy | 125× | 96.46% | 20,000× | 1 in 8,333,333 | 1 in 1.01 | 1 in 3.68 | 4.42× base | Simulate |
| Midnight Siege | Bonus buy | 250× | 96.26% | 20,000× | 1 in 8,333,333 | every round | 1 in 3.88 | 9.35× base | Simulate |
| Sealed Decree | Bonus buy | 450× | 96.02% | 20,000× | 1 in 8,333,333 | every round | 1 in 15 | 17.91× base | Simulate |
| Full Fortress | Bonus buy | 1,000× | 96.46% | 20,000× | 1 in 8,333,333 | – | 1 in 5.70 | 35.40× base | Simulate |
Work out the cost of Iron Warden 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 | 96.510% | Active |
Frequently asked
What is the RTP of Iron Warden?
Base spins return 96.51% of the amount wagered over the long run, from the published outcome table for version 2. Its bonus buys return between 96.02% and 96.46%.
What is the max win in Iron Warden and how likely is it?
The top payout is 20,000× the base bet. On a base spin it lands 1 in 8,333,333 spins. In the Iron Trial buy (50×) 20,000× lands 1 in 8,333,333 buys.
Does Iron Warden have a bonus buy, and what does it cost?
Yes, 5 buy modes. Iron Trial: 50× the base bet, 96.46% RTP, an expected cost of 1.77× the base bet per buy. Rampart Raid: 125× the base bet, 96.46% RTP, an expected cost of 4.42× the base bet per buy. Midnight Siege: 250× the base bet, 96.26% RTP, an expected cost of 9.35× the base bet per buy. Sealed Decree: 450× the base bet, 96.02% RTP, an expected cost of 17.91× the base bet per buy. Full Fortress: 1,000× the base bet, 96.46% RTP, an expected cost of 35.40× the base bet per buy.
Is Iron Warden high or low volatility?
Medium. Its base-mode standard deviation is 24.0× the bet, which puts it in the middle 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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