Immortal slot review

How to play Immortal

The Immortal slot pays for matching symbols anywhere on the board rather than on paylines, and winning symbols are cleared with new ones cascading in. The game screen shows a 6×5 grid, six reels of five symbols each, and Roshtein's listing gives a bet range of 0.10 to 1,000. Stake's short description calls it a 3×3 game, but the game itself settles the question.

Every winning board is multiplied by the value on the front pillar. In the base game that pillar normally starts at 2x. When the winning symbols clear, the pillars move forward and the multiplier doubles for the next board, so a long cascade grows quickly: 2x, 4x, 8x, 16x and onwards. Outside the bonuses, it resets to its starting value at the end of the spin.

That makes Immortal a game about chains. A single isolated win pays very little, while a spin that keeps cascading can climb into large multipliers within a few steps.

Immortal bonus tiers

Bonus symbols trigger one of four tiers, depending on how many land in base or Ante play. Each tier starts with eight spins, and every Bonus symbol that lands during the feature adds one more.

The key difference from the base game is that the multiplier is kept between spins. A spin without a win does not reset it; the value simply waits for the next winning board. That is why the higher tiers matter so much: starting Omega at 64x means the first doubling already takes it to 128x.

We could not confirm the starting value for the lowest Bonus tier, or whether the tiers differ in anything other than their starting multiplier.

Immortal bonus buy options

Immortal has six buy modes, all priced as multiples of the base bet. These come from Roshtein's listing; we could not check them against Stake's rules screen.

Two of these deserve care. Mystery and Omega charge you for an attempt, not for a guaranteed bonus. With Omega, four attempts in five pay nothing at all, so on average you spend about 5,000x for each Omega round you actually get. Mystery fails 40% of the time and lands the weaker Bonus or Super tiers half the time.

Roshtein says the 96.70% RTP applies across all modes, so none of the buys should change the long-run return. They do change how fast a balance can disappear: a single 4096X spin costs 5,000 at a 1.00 bet.

Immortal RTP, volatility and max win

The Immortal RTP is 96.70% on both Stake and Roshtein, which puts the house edge at 3.30%. That is above average for a slot this volatile, and no lower version has turned up.

The game labels itself Extreme volatility on its own intro screen, a step above the High rating some sites give it. That fits how it plays: most of the value sits in long cascade chains and the higher bonus tiers, so expect long quiet stretches.

The max win is 500,000x your bet. The intro screen of the demo states it directly, which settles the conflict with Stake’s short description, which still mentions 10,000x. It also fits the game’s design: a mode that sells spins starting at 4,096x for 5,000x would make little sense under a 10,000x cap.

Terminal Games and Stake Engine

Terminal Games is a small studio publishing through Stake Engine, the platform Stake launched in 2025 that lets independent teams release games directly on Stake. Its earlier Stake titles include Kill Switch, Made Men, Five Horsemen, Wage Slave and Moonshine, mostly extreme-volatility games with large caps.

Immortal carries Stake's Only on Stake label, so it is not available at other casinos. That is also why coverage is limited: the usual slot databases and review sites had not listed it when we checked.

Who Immortal suits

Immortal suits players who like simple, readable mechanics with a steep curve: one multiplier that keeps doubling, and four bonus tiers that start it higher each time. The 96.70% RTP is a point in its favour.

It is a poor fit for players who want steady small wins, and the attempt-based buys are easy to misjudge. Try it in Fun Play first. You can read more about where we play in our Stake review.