Single-player games like Suizokukan Project
Below are 9 single-player Steam games similar to Suizokukan Project, 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 Suizokukan Project page.
Ranked picks
- 1
Cornerpond
Single-player alternative to Suizokukan Project — playable solo, no multiplayer required. Shares Simulation and Casual with Suizokukan Project.
A chill idle-fishing desktop toy in the corner of your screen. Buy upgrades, catch rare fish, and customize your avatar at your own pace!
- 2
Black Hole Fishing
Single-player alternative to Suizokukan Project — playable solo, no multiplayer required. Shares Simulation and Casual with Suizokukan Project.
Black Hole Fishing is an absurd incremental game about catching, breeding, and perfecting SO MANY fish. Catch a fish, optimize its traits, then stock your pond with it as you pour fish and science into an endless singularity!
- 3
Idle Waters
Single-player alternative to Suizokukan Project — playable solo, no multiplayer required. Shares Simulation and Casual with Suizokukan Project.
A relaxing idle fishing game that waits for you at the bottom of your screen. CATCH fish, BUY upgrades, COMPLETE your collection, and DISPLAY them in your aquarium.
- 4
Mango's Fisharium
Single-player alternative to Suizokukan Project — playable solo, no multiplayer required. Shares Simulation and Casual with Suizokukan Project.
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.
- 5
Desktop Fishing
Single-player alternative to Suizokukan Project — playable solo, no multiplayer required. Shares Casual with Suizokukan Project.
Desktop Fishing is a cozy idle game that sits in the corner of your screen. Go about your usual desk work (or don't) while your frog buddy catches fish, discovers new outfits, and unlocks fishing spots.
- 6
Idlequarium
Single-player alternative to Suizokukan Project — playable solo, no multiplayer required. Shares Simulation and Casual with Suizokukan Project.
Idlequarium is a casual simulation game where you raise adorable little fish to earn coins, purchase decorations, and build a fully customized aquarium.The game sits anywhere on your desktop, letting you interact with your live aquarium during work or study breaks.
- 7
Desktop Fishes
Single-player alternative to Suizokukan Project — playable solo, no multiplayer required. Shares Simulation and Casual with Suizokukan Project.
A cozy idle aquarium overlay that brings your desktop to life with pixel-art fish. You can hatch, breed, and collect fishes in thousands of genetic combinations. Dress them up with accessories, watch them grow from eggs to adults, and unlock playful upgrades through a skill tree.
- 8
Tiny Pasture
Single-player alternative to Suizokukan Project — playable solo, no multiplayer required. Shares Simulation and Casual with Suizokukan Project.
Meet your new little desk buddies! They’ll snooze, scratch, and scamper around while you work or study (don’t worry, they’ve been trained not to invade your workspace). If you’re good at animal management, they will occupy the bottom of your screen with different kinds and colors!
- 9
Electio
Single-player alternative to Suizokukan Project — playable solo, no multiplayer required. Shares Simulation with Suizokukan Project.
Four blanks, two bullets, and a choice. Save yourself and sacrifice the others, or save them and risk your eternal death. Electio is a short narrative horror game that can be played only once. Choose wisely.