Mutagen Mayhem — GLXTCH Games

A toxic laboratory on a 6×5 cluster-pays grid where the board itself mutates. Contamination spreads and doubles, reaction nodes fire chains, mutation blobs merge — and when they all join, it is Ultimate Mayhem.

▶ Play the demo

96.70%RTP, every mode

50,000×Max win

6×5Cluster pays

HighVolatility

10Bet modes

The bonuses

Contamination

10 free spins · Plus: 12

Positions get contaminated and double every time they take part in a win. The mutation stays in place while symbols fall through it.

Chain Reaction

10 free spins · Plus: 12

A win on a reaction node fires a chain through nearby nodes; their values add up into the multiplier.

Mutation Merge

10 free spins · Plus: 12

Mutation blobs that land near each other merge into one bigger blob worth more than their sum.

Ultimate Mayhem

12 free spins · Plus: 16

The three mechanics join one after the other on the same grid. Its Max tier lands with 4 Super Scatters.

Secret Bonus

3 Mystery Scatters

The rarest bonus after Ultimate Max. What happens inside the Meltdown stays a secret — trigger it to find out.

SECRET

Paytable

Pays × the bet, by cluster size

Symbol	5	6–7	8–9	10–12	13+
Gloop	2x	5x	12x	30x	100x
Mutagen Vial	1.5x	3.5x	8x	20x	60x
Reactor Canister	1x	2.5x	6x	15x	40x
Toxic Barrel	0.8x	2x	4x	10x	30x
Blue Energy Orb	0.5x	1x	2.5x	6x	15x
Pink Eyeball	0.4x	0.8x	2x	5x	12x
Green Crystal	0.3x	0.6x	1.5x	4x	10x
Purple Skull	0.3x	0.5x	1.2x	3x	8x
Gold Hazard Coin	0.2x	0.4x	1x	2.5x	6x

Wild

Joins any cluster as the matching symbol.

Scatter

3 on the board start a bonus; with Super Scatters it sets the tier. In a bonus, 3 award extra free spins.

Super Scatter

Chooses which bonus starts, with the Scatters around it.

Mystery Scatter

3 on the board start the Secret Bonus, whatever the other Scatters show.

Bonus buys

Bonus	Price
Contamination	100× the bet
Chain Reaction	200× the bet
Mutation Merge	300× the bet
Bonus Wheel	250× the bet	Picks the bonus: Contamination 48% · Chain Reaction 30% · Mutation Merge 18% · Secret Bonus 2% · Ultimate Mayhem 2%

Side spins

One spin with the attraction already on the board

Side spin	Price	Attraction
TOXIC SPIN	7× the bet	Contamination
CHAIN SPIN	10× the bet	Chain
MUTATION SPIN I	15× the bet	Merge
MUTATION SPIN II	30× the bet	Merge
MUTATION SPIN III	60× the bet	Merge

Rules

Wins are clusters of 5 or more identical symbols touching horizontally or vertically; Wilds count as any symbol.
Winning symbols explode and new ones fall in (cascade) until no cluster is left; every win of the spin is added up.
In the bonuses the grid carries mutations that stay in place while symbols fall through them; a cluster is multiplied by the sum of the mutations on its positions.
Trigger symbols are counted at the end of the spin. Super Scatters choose the mechanic, Scatters choose the tier (more Scatters = the Plus tier).
Side spins: one base-game spin played with a mechanic already on the board; only the bonus of the same mechanic can trigger.
Theoretical RTP: 96.70 % on every mode. Max win: 50,000× the bet per round.

Malfunction voids all wins and plays. The demo plays with play money only, on the same published math (same RTP) as the real game.

The bonuses

Contamination

Chain Reaction

Mutation Merge

Ultimate Mayhem

Secret Bonus

Paytable

Bonus buys

Side spins

Rules

Something escaped the lab.