Free games like ARC Aquarium
Below are 9 free-to-play Steam games similar to ARC Aquarium, ranked by player overlap and content similarity. No purchase or Steam login required to view the list. Every pick is a full free-to-play title — not a demo, trial, or time-limited giveaway. imho.run's catalogue refreshes daily, so newly free or newly popular titles surface here without manual editing.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like ARC Aquarium page.
Ranked picks
- 1
Helltaker
Free-to-play alternative to ARC Aquarium — no purchase or trial window. Shares Indie with ARC Aquarium.
Helltaker is a short game about sharply dressed demon girls.
- 2
Ultimate Custom Night
Free-to-play alternative to ARC Aquarium — no purchase or trial window. Shares Indie with ARC Aquarium.
Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!
- 3
Bongo Cat
Free-to-play alternative to ARC Aquarium — no purchase or trial window. Shares Indie and Simulation with ARC Aquarium.
Bongo cat needs your help. Bongo cat needz more hatz!!! Every time you press a key, Bongo cat will punch your taskbar. Type, click, play, work to collect more points. Which hats will you find?
- 4
The Murder of Sonic the Hedgehog
Free-to-play alternative to ARC Aquarium — no purchase or trial window. Shares Indie and Simulation with ARC Aquarium.
Sonic the Hedgehog...was murdered!? Get to the bottom of the mystery in this brand-new adventure!
- 5
Sheepy: A Short Adventure
Free-to-play alternative to ARC Aquarium — no purchase or trial window. Shares Indie and Casual with ARC Aquarium.
A Short Handcrafted Pixel Art Platformer that follows Sheepy, an abandoned plushy brought to life. Sheepy: A Short Adventure is the first short game from MrSuicideSheep.
- 6
Our Life: Beginnings & Always
Free-to-play alternative to ARC Aquarium — no purchase or trial window. Shares Indie and Casual with ARC Aquarium.
A twenty-dollar bill, four summers, fifteen years, and a one of a kind life. Create an experience that’s all your own in this near-fully customizable visual novel where you grow from childhood to adulthood with the lonely boy next door.
- 7
NGU IDLE
Free-to-play alternative to ARC Aquarium — no purchase or trial window. Shares Indie and Simulation with ARC Aquarium.
NGU Idle is a Free To Play Idle game that's full of weird humor, tons of upgrades and hundreds of hours of content! Try out NGU Idle today and experience the joy of Numbers Going Up!
- 8
Awaria
Free-to-play alternative to ARC Aquarium — no purchase or trial window. Shares Indie with ARC Aquarium.
Awaria is a short game about working in haunted maintenance tunnels.
- 9
Desktank
Free-to-play alternative to ARC Aquarium — no purchase or trial window. 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.