Space Mutants

8.8/10 New Casino Game Reviews team rating
Space Mutants slot by Hacksaw Gaming
  • RTP: 96.31
  • Max Win: x10000.00
  • Betways:
  • Volatility: Med
  • Game Type: Slots
  • Release Date: September 18th, 2026
Our rating: 8.8/10 by the New Casino Game Reviews team
RTP 8.6 Max win 8.3 Features 8.4 Freshness 10.0

Features we found: free spins, bonus buy, multiplier, cascade

How we rate games

Every slot is scored on the same four criteria, using the game's published data: RTP (40%), maximum win potential (25%), bonus features described in our review (30%) and how recent the release is (5%). Missing data counts as neutral. The score reflects the game's numbers and features, not your chances of winning; slots are games of chance, so please play responsibly.

Space Mutants slot by Hacksaw Gaming

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Space Mutants is a Hacksaw Gaming slot released in September 2026, a cheerful sci-fi lab where a scientist in a brain helmet keeps a crowd of colourful blobs in glass tubes. The game is played on a 6x6 grid with cluster pays, so there are no paylines: groups of matching mutants win, then disappear and let new ones fall in. The RTP is 96.31%, the volatility is medium and the maximum win is 10,000x the bet.

Cluster Pays And Cascades

The mutants are simple round or square creatures in orange, green, blue, purple, red and cyan, each with a different face, and the grid is framed by a glowing blue panel. Every win triggers an avalanche: the winning symbols vanish and new symbols drop down, which can chain into several wins on one spin. A multiplier box on the left of the grid starts at x1 and grows during cascades, and a meter on the right side of the grid fills up as the game goes on. Before the first spin the intro screen shows three pillars of the game: Mutant Surge, Astro Mutant and Max Win.

Mutant Surge

The Mutant Surge feature is the main source of Wilds. As the surge meter fills, the game unleashes several 2x2 Giant Wilds on the grid, and on a 6x6 board a block of four wild positions can connect a large part of the screen at once. This is where the biggest base game wins are built, since a Giant Wild next to a big cluster of the same symbol pushes it much higher.

The Astro Mutant

The red star-shaped Astro Mutant is the special character of the game. It transforms into a Wild and awards multipliers and more Wilds across the reels. In the bonus game it keeps dropping surprise Wilds with an additional multiplier boost, so the character matters more the longer the round runs.

Space Chaos Bonus

The scatter is a glowing yellow flask labelled SCATTER. Landing enough of them starts the Space Chaos Bonus, which begins with 10, 15 or 20 free spins. The screen changes from blue to a red laboratory alarm, and the rules are different from the base game in an important way: the multiplier increases with every cascade and never resets during the whole bonus. Mutant Surge is active here as well, which makes more Giant Wilds possible. When the multiplier is already at x4 a single cascade can pay far more than in the base game, and the total win and spins left are shown in the corner of the screen.

How The Bonus Begins

When the flasks line up, the whole grid is covered by a thick green gas cloud and the scatters glow on top of it, and then a text screen appears with the bonus rules: “The multiplier increases with every cascade and never resets during the entire bonus game”, followed by a short explanation of Mutant Surge and the Astro Mutant. After you click to continue, the frame turns pink and red, the free spins counter shows up at the bottom, and the first spin starts with the multiplier at x1. Winning clusters are announced with a big yellow number in the middle of the grid, and a Wild shaped like a flying saucer marks the Giant Wild cells.

During the cascades the multiplier box on the left steps up from x1 to x4 and beyond. Since a 6x6 grid has 36 positions, a long chain of cascades is more likely than on a 5x3 slot, and this is why the bonus multiplier is the main number to watch.

Buy Feature And Feature Spins

The Buy Bonus button opens three options, shown at a 2.00 stake:

  • Bonushunt FeatureSpins at 3x the bet: each spin is five times more likely to trigger a bonus game;
  • Astro Mutant FeatureSpins at 50x: each spin guarantees at least one Astro Mutant symbol on the reels;
  • Space Chaos Bonus at 100x: you enter the bonus game directly with 10, 15 or 20 free spins, and the multipliers persist for the entire bonus.

The menu lists the Bonushunt option as high volatility and the other two as very high. In a bought round the confirmation window asks you to accept the 200 charge before the spin starts, and the award screen then tells you how many spins you received, for example 15.

RTP, Volatility And Max Win

The listed RTP is 96.31%, and as usual casinos can offer a lower setting, so look at the rules page of the game you open. The volatility is medium, the layout has no paylines, and the maximum win is 10,000x the stake. The persistent multiplier in the Space Chaos Bonus is the realistic road to the top prize, since every cascade pushes it up and nothing takes it down.

Who Will Enjoy It

Space Mutants suits players who like cascading cluster slots with a light, cartoon mood and a clear bonus idea. The three-option buy menu, the cheap Bonushunt entry and the always-growing bonus multiplier make it easy to understand and fun to test in the demo before you play for real.

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