Single-player games like My Aquarium
Below are 13 single-player Steam games similar to My 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 My Aquarium page.
Ranked picks
- 1

Fantasy Aquarium
Single-player alternative to My Aquarium — playable solo, no multiplayer required. Shares Indie and Simulation with My Aquarium.
Fantasy Aquarium offers an effortless way to enhance your gaming experience. You can nurture a diverse range of small fish with unique characteristics and construct a vibrant fantasy world from scratch, transforming mundane fish-keeping into an engaging pursuit.
- 2

Behind Glass: Aquarium Simulator
Single-player alternative to My Aquarium — playable solo, no multiplayer required. Shares Indie and Simulation with My Aquarium.
Create stunning virtual aquariums on your PC! Our advanced 3D engine brings your fish tank to life with breathtaking realism, featuring lifelike fish, plants, decorations, and more. Transform your monitor into a vibrant, living aquarium. Virtual aquascaping has never been easier!
- 3

Tiny Pasture
Single-player alternative to My Aquarium — playable solo, no multiplayer required. Shares Indie and Simulation with My Aquarium.
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!
- 4

Chillquarium
Single-player alternative to My Aquarium — playable solo, no multiplayer required. Shares Simulation and Casual with My Aquarium.
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 My Aquarium — playable solo, no multiplayer required. Shares Indie and Simulation with My Aquarium.
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

Cornerpond
Single-player alternative to My Aquarium — playable solo, no multiplayer required. Shares Indie and Simulation with My Aquarium.
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!
- 7

Loafing Town
Single-player alternative to My Aquarium — playable solo, no multiplayer required. Shares Indie and Simulation with My Aquarium.
A relaxing and humorous idle god simulator that stays at the bottom of your screen or on a second monitor while you do other things. With physics-based dragging interactions, it feels just like playing with desk toys.
- 8

Joyquarium
Single-player alternative to My Aquarium — playable solo, no multiplayer required. Shares Indie and Simulation with My Aquarium.
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).
- 9

Duncrush
Single-player alternative to My Aquarium — playable solo, no multiplayer required. Shares Indie and Casual with My Aquarium.
Duncrush is a clicker RPG where you defeat monsters by clicking and conquer a variety of dungeons. Collect gold, weapons, shields, and accessories to power up your hero and create your own strategy with the skill tree. Battle stronger enemies and clear challenging dungeons!
- 10

Shooting Donut
Single-player alternative to My Aquarium — playable solo, no multiplayer required. Shares Indie and Casual with My Aquarium.
'Shooting Donut' is an addictive puzzle game with 100 diverse stages, where you shoot donuts to break candies. Utilize 4 items strategically to clear the levels.
- 11

Necromancer's Revenge
Single-player alternative to My Aquarium — playable solo, no multiplayer required. Shares Indie and Casual with My Aquarium.
Summon the Dark Lord for revenge! This game combines survival and roguelite elements, where you summon monsters and place totems to defeat monsters and take down the Dark Lord!
- 12

Mine It All!
Single-player alternative to My Aquarium — playable solo, no multiplayer required. Shares Indie and Casual with My Aquarium.
Mine blocks across the screen, gather resources, and upgrade your tools. Build furnaces and automation systems to improve efficiency, then trigger chain reactions with special blocks to clear huge sections of the screen at once.
- 13

Spell Knight: Abyss Cleaver
Single-player alternative to My Aquarium — playable solo, no multiplayer required. Shares Indie and Casual with My Aquarium.
Descend into the dark abyss and wipe out endless hordes of monsters. Wield powerful weapons as a magic knight and enjoy the thrill of rapid growth.