Single-player games like My Koi
Below are 8 single-player Steam games similar to My Koi, 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 My Koi page.
Ranked picks
- 1
Ultimate Fishing Simulator®
Single-player alternative to My Koi — playable solo, no multiplayer required. Shares Simulation and Casual with My Koi.
Bored of waiting for a bite? Would you like to catch some fish? You're lucky - in Ultimate Fishing Simulator, fish bite like crazy! Spinning, float fishing, ground fishing, and more! Comprehensive fishing simulator that allows using various techniques, in different places around the world!
- 2
Zen Aquarium
Single-player alternative to My Koi — playable solo, no multiplayer required. Shares Simulation with My Koi.
Immerse yourself in the ultimate relaxing aquarium experience. Watch fish glide gracefully through a serene, ever-changing tank—no setup, no stress, just pure tranquility. Enjoy soothing visuals and ambient ASMR sounds as your aquarium comes to life effortlessly. Your peaceful escape awaits!
- 3
Koi Farm
Single-player alternative to My Koi — playable solo, no multiplayer required. Shares Indie and Simulation with My Koi.
A koi breeding game.
- 4
Aquarium Designer
Single-player alternative to My Koi — playable solo, no multiplayer required. Shares Indie and Simulation with My Koi.
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!
- 5
Mountain
Single-player alternative to My Koi — playable solo, no multiplayer required. Shares Indie and Simulation with My Koi.
Existential Nature Simulation
- 6
Chillquarium
Single-player alternative to My Koi — playable solo, no multiplayer required. Shares Simulation and Casual with My Koi.
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!
- 7
FISHERY
Single-player alternative to My Koi — playable solo, no multiplayer required. Shares Indie and Simulation with My Koi.
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.
- 8
ABZU
Single-player alternative to My Koi — playable solo, no multiplayer required. Shares Indie and Simulation with My Koi.
From the art director of Journey®, ABZÛ is a beautiful underwater adventure that evokes the dream of diving. Immerse yourself in a vibrant hidden world bursting with color and life as you descend into the heart of the ocean. But beware as you swim deeper as dangers lurk in the depths.