Single-player games like Moon Fishies
Below are 8 single-player Steam games similar to Moon Fishies, 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 Moon Fishies page.
Ranked picks
- 1
Joyquarium
Single-player alternative to Moon Fishies — playable solo, no multiplayer required. Shares Indie and Simulation with Moon Fishies.
Joyquarium is a relaxing casual fish-raising game. Buy various cute fry and sell them at a high price after they grow up. With the money you earn, you can purchase aquatic plants, driftwood, scenery stone, etc. to decorate your tank (you can freely adjust the color, size, and position).
- 2
Megaquarium
Single-player alternative to Moon Fishies — playable solo, no multiplayer required. Shares Indie and Simulation with Moon Fishies.
The public aquarium simulator. Design your displays, look after your fish, manage your staff and keep your guests happy! It's all in a day's work as the curator of your very own Megaquarium.
- 3
Watch Your Plastic Duck
Single-player alternative to Moon Fishies — playable solo, no multiplayer required. Shares Indie and Simulation with Moon Fishies.
Small rubber ducks calmly swim in the pool and you can watch them to relaxing music. What can go wrong?
- 4
Chillquarium
Single-player alternative to Moon Fishies — playable solo, no multiplayer required. Shares Simulation and Casual with Moon Fishies.
Chillquarium is a cozy and relaxing idle game. Buy fish and raise them in real time, then sell them to turn a profit! Customize your aquarium as you progress from a simple starter tank to your dream setup by filling your collection with rare exotic fish and ultra-rare color variants!
- 5
FISHERY
Single-player alternative to Moon Fishies — playable solo, no multiplayer required. Shares Indie and Simulation with Moon Fishies.
Fishery is a stylized aquarium simulation game. Harness your creativity to build and maintain beautiful aquatic habitats. Then relax and watch your beautiful fish enjoy their home.
- 6
SUPER BUILD
Single-player alternative to Moon Fishies — playable solo, no multiplayer required. Shares Indie and Simulation with Moon Fishies.
Build, design, and explore your own fantasy world using over 1000+ items, in this relaxing sandbox game. No missions, no objectives, no timers. Just stress-free building, exploration, and good vibes.
- 7
IncrediMarble
Single-player alternative to Moon Fishies — playable solo, no multiplayer required. Shares Indie and Simulation with Moon Fishies.
Build amazing marble contraptions with IncrediMarble! Enjoy idle incremental tycoon sandbox simulation gameplay with the best physics Unity can offer. It's like that old toy you had as a kid!
- 8
Cast n Chill
Single-player alternative to Moon Fishies — playable solo, no multiplayer required. Shares Indie and Simulation with Moon Fishies.
Cast n Chill is a relaxing fishing game where you explore serene lakes, rivers, and oceans. Catch rare fish, upgrade your gear and reel in legendary catches - all with your loyal companion by your side.