Free games like Behind Glass: Aquarium Simulator
Below are 9 free-to-play Steam games similar to Behind Glass: Aquarium Simulator, 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 Behind Glass: Aquarium Simulator page.
Ranked picks
- 1
Bongo Cat
Free-to-play alternative to Behind Glass: Aquarium Simulator — no purchase or trial window. Shares Indie and Simulation with Behind Glass: Aquarium Simulator.
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?
- 2
NGU IDLE
Free-to-play alternative to Behind Glass: Aquarium Simulator — no purchase or trial window. Shares Indie and Simulation with Behind Glass: Aquarium Simulator.
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!
- 3
Virtual Cottage
Free-to-play alternative to Behind Glass: Aquarium Simulator — no purchase or trial window. Shares Indie and Simulation with Behind Glass: Aquarium Simulator.
Virtual Cottage gives you a comfy place to rest and be productive without any distractions. Open the game, set yourself a goal and enjoy the atmosphere.
- 4
Steam Engine Simulator
Free-to-play alternative to Behind Glass: Aquarium Simulator — no purchase or trial window. Shares Simulation with Behind Glass: Aquarium Simulator.
The Steam Engine Simulator shown on AngeTheGreat's YouTube channel.
- 5
Magic Archery
Free-to-play alternative to Behind Glass: Aquarium Simulator — no purchase or trial window. Shares Indie and Simulation with Behind Glass: Aquarium Simulator.
Train a commoner to become the greatest archer in this short incremental game! Increase your stats, gather wealth from quests, buy upgrades, and infuse your arrows with magic.
- 6
Coloring Pixels
Free-to-play alternative to Behind Glass: Aquarium Simulator — no purchase or trial window. Shares Indie and Casual with Behind Glass: Aquarium Simulator.
A relaxing coloring by numbers game. Enjoy completing a variety of images with differing themes, complexity, and sizes.
- 7
An Arcade Full of Cats
Free-to-play alternative to Behind Glass: Aquarium Simulator — no purchase or trial window. Shares Indie and Casual with Behind Glass: Aquarium Simulator.
Journey through gaming history's time and space, while searching for adorable feline companions in 'An Arcade Full of Cats,' the ultimate pet'em up hidden object game.
- 8
DORONKO WANKO
Free-to-play alternative to Behind Glass: Aquarium Simulator — no purchase or trial window. Shares Simulation and Casual with Behind Glass: Aquarium Simulator.
『DORONKO WANKO』 is a DORONKO Action Game. In this game, You can become a cute, innocent Pomeranian, make your master's home messy and dirty. "Will the master be angry with me?" Don't worry. Because you are a sweet doggie.
- 9
Call of Farming
Free-to-play alternative to Behind Glass: Aquarium Simulator — no purchase or trial window. Shares Indie and Simulation with Behind Glass: Aquarium Simulator.
A game for you to create your own farming or simulation game. It includes an inventory, craft, building, growing plants, farm animals and much more.