Single-player games like Don't kill the fish
Below are 8 single-player Steam games similar to Don't kill the 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 Don't kill the fish page.
Ranked picks
- 1

Boba Simulator : Idle Shop Management
Single-player alternative to Don't kill the fish — playable solo, no multiplayer required. Shares Indie and Simulation with Don't kill the fish.
Boba Tea shop simulator. Manage recipe, stock and customer satisfaction.
- 2

Mango's Fisharium
Single-player alternative to Don't kill the fish — playable solo, no multiplayer required. Shares Indie and Simulation with Don't kill the fish.
Mango’s Fisharium is a short incremental game about catching unique fishes and displaying them in the Fish Aquarium. Designed to be completed in around 4 hours.
- 3

Cult Nation
Single-player alternative to Don't kill the fish — playable solo, no multiplayer required. Shares Indie and Simulation with Don't kill the fish.
A short incremental game about sacrificing all your cult followers and collecting blood to awaken the devil.
- 4

Unpacking
Single-player alternative to Don't kill the fish — playable solo, no multiplayer required. Shares Indie and Simulation with Don't kill the fish.
Unpacking is a zen puzzle game about the familiar experience of pulling possessions out of boxes and fitting them into a new home. Part block-fitting puzzle, part home decoration, you are invited to create a satisfying living space while learning clues about the life you’re unpacking.
- 5

Horripilant
Single-player alternative to Don't kill the fish — playable solo, no multiplayer required. Shares Indie and Simulation with Don't kill the fish.
KILL YOUR GOD. BECOME WORTHY. Horripilant is a chilling idle incremental dungeon crawl through the horrors of a forgotten underworld.
- 6

Snakecremental
Single-player alternative to Don't kill the fish — playable solo, no multiplayer required. Shares Indie and Simulation with Don't kill the fish.
Snake, but with a skill tree
- 7

Wild Growth
Single-player alternative to Don't kill the fish — playable solo, no multiplayer required. Shares Indie and Simulation with Don't kill the fish.
Wild Growth is a short, actionpacked incremental healer game set in a grim norse world.
- 8

Marisa!ReturnTheBook!
Single-player alternative to Don't kill the fish — playable solo, no multiplayer required. Shares Indie and Casual with Don't kill the fish.
A 2D top-down idle AFK & battle stage-clearing game set in Gensokyo. In the peaceful and tranquil Gensoukyo, a little girl with yellow hair who likes to borrow books everywhere has aroused Alice's anger. Therefore, she calls on everyone in Gensoukyo to gather in front of Marisa's house for a battle