Single-player games like Mutant Fish
Below are 8 single-player Steam games similar to Mutant Fish, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Mutant Fish page.
Ranked picks
- 1
MESO
Single-player alternative to Mutant Fish — playable solo, no multiplayer required. Shares Indie and Casual with Mutant Fish.
Meso is a fast-paced exploration-action game with arcade feel and a unique underwater movement. Enter the microcosmic world of puddles and save the ecosystem. Fight against the algae plague and the mysterious invaders. Collect energy, dodge your enemies and master the unique underwater movement.
- 2
Fish. Love. Danger.
Single-player alternative to Mutant Fish — playable solo, no multiplayer required. Shares Indie and Casual with Mutant Fish.
A cute HARDCORE arcade game about a fish in love.
- 3
Down the Drain
Single-player alternative to Mutant Fish — playable solo, no multiplayer required. Shares Indie and Casual with Mutant Fish.
Take a trip below the sink with Marta in this top-down 2D shooter through randomly generated mazes of pipes. Defeat gooey enemies, overcome strong bosses, and learn what's really going on when trouble starts brewing beneath our tubs and under our streets.
- 4
Agile firefighter
Single-player alternative to Mutant Fish — playable solo, no multiplayer required. Shares Indie and Casual with Mutant Fish.
Agile firefighter is a small game in which you are a firefighter and save people from fire!
- 5
HootBox
Single-player alternative to Mutant Fish — playable solo, no multiplayer required. Shares Indie and Casual with Mutant Fish.
Hootbox is an unusual vertical platformer where the main goal is to stack boxes to keep climbing upwards.
- 6
CrabbleUp
Single-player alternative to Mutant Fish — playable solo, no multiplayer required. Shares Indie and Casual with Mutant Fish.
Dive into an oceanic odyssey, where serene exploration meets thrilling challenges. Embark on a journey through endless underwater mazes, armed only with your cunning and defending yourself from perilous foes with the power of your bubbles.
- 7
Water Ball
Single-player alternative to Mutant Fish — playable solo, no multiplayer required. Shares Indie and Casual with Mutant Fish.
Water Ball - a puzzle game from category 3 in a row, made in 2D hand-drawn graphics.
- 8
Oceanarium
Single-player alternative to Mutant Fish — playable solo, no multiplayer required. Shares Indie and Casual with Mutant Fish.
Oceanarium is a meditative underwater interplanetary exploration game about all the forces that tie the strange creatures of the universe together.