Single-player games like ARC Aquarium
Below are 8 single-player Steam games similar to ARC Aquarium, 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 ARC Aquarium page.
Ranked picks
- 1
Aquarium Designer
Single-player alternative to ARC Aquarium — playable solo, no multiplayer required. Shares Indie and Simulation with ARC Aquarium.
Aquarium Designer gives you an opportunity to create the aquarium of your dreams! Become a professional whose job is to design it, build it, and fill it with the various underwater wildlife! All types, all sizes - your creativity is your only limit!
- 2
FishPond
Single-player alternative to ARC Aquarium — playable solo, no multiplayer required. Shares Indie and Simulation with ARC Aquarium.
Build a living pond where every fish has a unique genetic code. Breed for rare traits, balance oxygen and hunger, unlock new species, and watch your ecosystem compose its own soundtrack in real time. Part sim, part idle game, part science experiment gone beautifully wrong.
- 3
Idle Aquarium
Single-player alternative to ARC Aquarium — playable solo, no multiplayer required. Shares Indie and Simulation with ARC Aquarium.
A game that let enjoy fish keeping and decorating your aquarium while doing your work
- 4
Orion Blue
Single-player alternative to ARC Aquarium — playable solo, no multiplayer required. Shares Indie and Simulation with ARC Aquarium.
Orion Blue is a cozy fishing adventure set on a beautiful alien planet. Catch fish, gather resources, and build relationships with the locals. Play actively, or relax and let the game progress with Idle Mode.
- 5
Desktank
Single-player alternative to ARC Aquarium — playable solo, no multiplayer required. Shares Indie and Simulation with ARC Aquarium.
A cozy idle aquarium that lives on top of your screen. Watch fish swim, grow, and interact while you work or relax. Desktank turns your desktop into a peaceful underwater world — float it in the corner or let it take over the whole screen. Just sit back and enjoy the calm.
- 6
Fish Simulator: Aquarium Manager
Single-player alternative to ARC Aquarium — playable solo, no multiplayer required. Shares Indie and Simulation with ARC Aquarium.
Discover a myriad of exotic species in this relaxing aquarium manager. Balance your resources and care for your fish to build the ultimate habitat.
- 7
Moon Fishies
Single-player alternative to ARC Aquarium — playable solo, no multiplayer required. Shares Indie and Simulation with ARC Aquarium.
Moonfishies is relaxing desktop fish simulator. Customize your dream aquarium, catch new fish and breed unique hybrids!
- 8
Idlequarium
Single-player alternative to ARC Aquarium — playable solo, no multiplayer required. Shares Indie and Simulation with ARC Aquarium.
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.