Mutant Fish Lab

Mutant Fish Lab is a simulation game about engineering mutant fish and watching them fight automatically. You summon fish with different combinations of traits and abilities, then put them in a tank to battle. Survivors gain experience, level up and mutate into stronger or more unpredictable forms.

Experiment with mutations

You can extract and replicate mutations you find for use in future fish. Ability combinations, procedural mutations and design choices let you experiment with different lifeforms.

Design for each challenge

Some challenges call for the weakest fish possible, one that dies first. Others require fish that can dash across the tank dozens of times before time runs out. Each task tests your ability to design a fish for a specific purpose.