Single-player games like The Fish
Below are 11 single-player Steam games similar to 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 The Fish page.
Ranked picks
- 1

The World of a Mermaid
Single-player alternative to The Fish — playable solo, no multiplayer required. Shares Simulation with The Fish.
Welcome in the underwater world of a mermaid, with aquatics creatures & the queen, welcome in The World of a Mermaid!
- 2

Мухосранск | Russian City Sim
Single-player alternative to The Fish — playable solo, no multiplayer required. Shares Simulation with The Fish.
The atmosphere of the nuclear wasteland.
- 3

subROV : Underwater Discoveries
Single-player alternative to The Fish — playable solo, no multiplayer required. Shares Simulation and Casual with The Fish.
Pilot a remotely operated submarine and explore the oceans! Defy the darkness and crushing pressure of the deeps as you chart unknown regions and study new species of ocean life.
- 4

Megaquarium
Single-player alternative to The Fish — playable solo, no multiplayer required. Shares Simulation and Casual with The Fish.
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.
- 5

To Pixelia
Single-player alternative to The Fish — playable solo, no multiplayer required. Shares Simulation and Casual with The Fish.
Meet the Pixelians and discover the ultimate life simulator in To Pixelia. As you climb your career ladder of choice, step into the world of politics, art, sports, music, and even crime. Live your dream life in pixels!
- 6

Beyond Blue
Single-player alternative to The Fish — playable solo, no multiplayer required. Shares Simulation and Casual with The Fish.
Beyond Blue is a single-player narrative adventure that takes you deep into our planet’s beating blue heart. Explore the awesome wonder and unbounded mystery that exists within the world’s ocean.
- 7

DrainSim
Single-player alternative to The Fish — playable solo, no multiplayer required. Shares Simulation and Casual with The Fish.
Dive into DrainSim and seize control of the floods! Clear the city's submerged streets, with a huge range of different tools from rakes to submersible pumps. Embrace the satisfaction of restoring the water flow. Become the city's hero, one drain at a time.
- 8

Aquarium Designer
Single-player alternative to The Fish — playable solo, no multiplayer required. Shares Simulation and Casual with The Fish.
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!
- 9

My Low Poly City
Single-player alternative to The Fish — playable solo, no multiplayer required.
Build your own colorful mini city, and take a ride in it.
- 10

Golf With Your Grandmother
Single-player alternative to The Fish — playable solo, no multiplayer required.
Try to keep your grandmother alive through these 30 weaponized golf courses.
- 11

The Bird
Single-player alternative to The Fish — playable solo, no multiplayer required. Shares Simulation with The Fish.
Spread the wings and fly around in a large tropical Island landscape in this bird simulator.