
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!
Modeled estimate, not a reported figure. How we estimate →
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About
Behind Glass is the ultimate fish-keeping game, designed to deliver a relaxing yet deeply engaging experience for aquarium enthusiasts and casual players alike.
Whether you’re a passionate aquascaper or simply enjoy the calming beauty of underwater worlds, this game offers everything you need to create your dream aquarium.
Explore a vast sandbox environment where you can design stunning 3D aquariums with incredible creative freedom. Choose between freshwater and saltwater tanks, each offering unique challenges and opportunities to showcase your style. With access to over 280 unique fish species, along with crabs, turtles, and axolotls, your tanks will be bursting with life.

Behind Glass stands apart with its immersive water chemistry simulation, allowing players to delve into the science behind aquarium care. Adjust pH, salinity, and other parameters to create the perfect conditions for your aquatic friends. For those who prefer a more relaxed approach, the designer mode offers the freedom to focus on design and aesthetics without any constraints.

Forget about grinding or locked content — everything is available right from the start. From vibrant fish to countless decorations, you’ll have every tool at your disposal to craft aquariums that reflect your imagination.
Dive deep into the game’s features:
Instant access to a vast array of decorations, plants, and creatures.
Detailed animations and realistic behaviors for fish and aquatic animals.
The ability to mix and match species in diverse habitats.
A meditative, stress-free atmosphere designed for relaxation.
No other fish tank simulation comes close to offering this level of depth and creativity. Whether you’re a beginner or an experienced aquascaper, Behind Glass lets you build, customize, and manage stunning aquariums without limits.
Start your aquascaping journey today and transform your virtual tanks into mesmerizing underwater worlds!
Genres
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English, German, French, Italian, Spanish - Spain, Japanese, Portuguese - Portugal, Russian, Turkish, Portuguese - Brazil, Spanish - Latin America, Korean +2 more
Engagement
Hours played at review time, across 42 reviews with recorded playtime.
Reviews
Themes across 42 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
positive critical· bar length = how often the theme comes up
Reviews
A great relaxing game, amazing graphics and realistic movement of fish, love the freedom to create anything you want Would love however if there were more objects to place, such as pillars, ruins, shipwrecks, general fishtankery decorations, while there still is a decent amount to choose from, it’s mainly natural things, plants, and rocks etc, everything else is perfect! Definitely worth the price!
the endless possibilities are really nice.
LOVE IT so realistic and so cool but it gets boring after i while
It looks excellent and is a great replacement for the actual aquarium when you cannot construct a real one :'-) Or maybe even better considering all the hustle with the cleaning-feeding-CO2-etc.
Simulate the simple aquarium of your dreams
Very realistic aquarium game, the fish are beautiful! I hope they continue to add more plants and species.
The best aquarium simulator I have played to date! If you are big on the intricacies of this sort of thing this is the one for you! Lots of details to enjoy, I am not even close to getting through all of them yet. Another perk is devs are very responsive to community feedback (and active), making you feel like you have a say in the direction of the game. Overall strongly reccomend contributing to this project and having fun along the way. The sale right now is a great time to do so :)
Good virtual aquarium for exploring one's own creativity.
had niet verwacht dat dit zo ongelooflijk mooi zou zijn, alles heel realistisch, bijvoorbeeld een schildpad die met zijn hoofd boven water komt, vissen die op elkaar reageren en hoe ze overal voorbij zwemmen echt heel mooi gedaan, en planten passen zich aan aan bijvoorbeeld een rots of tak, het glas wordt ook realistisch vies.. en ik heb niet eens een hele moderne computer met een dure grafische kaart
힐링
Related
Related
Trends
Concurrent players on Steam, sampled daily since tracking started.
Audience
Estimated from the language of this game's reviews — a proxy for where players are, not official Steam demographics.
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