
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
魚の動きは概ね良好ですが、亀は底面でバタバタして動かなくなりフリーズ状態になる。 魚の種類としては各種の海老とタコ及びフグの登場が待たれます。
This is the best aquarium design game in the store right now. Just take a look at the workshop at what the community have made. There are moments that are absolutely photorealistic. These stills don't do justice to the motion of the fish, however, which are the most lifelike of any game in this niche. Watching your betta fish randomly assault your school of corydoras, or how they all scramble when you drop in some food...these are much more than just cardboard cutouts of fish hastily slapped in as decorations. This is the first of these sims that I've played where I could easily replicate my own freshwater tanks from home, from the decorations, plants, substrates, down to making custom crossbreeds of fish to get ones that looked like my own. I have a tank in-game that houses replicas of all the fish that have passed away in our fishroom in the last three years, and it serves as a potent reminder of the lessons I've learned in the hobby the hard way, and the great friendships our family has shared. This wouldn't be possible if the tools were complicated or obtuse, or there weren't enough variations of decor and species to choose from. I don't play these games to simulate water parameters and turn the tank into a tamagotchi or idler game. I haven't tried any of the systems in this title to replicate those aspects, so it may be a blind spot of this recommendation if they don't deliver in the same way as the design elements. For me, it's all about designing a great aquascape, populating it with the right community of fish, and turning the whole thing into a living wallpaper and letting it shine. The different camera modes and '2d' mode make this game into eye candy and give a real sense of accomplishment when a build is finished. You can get everything for about 20 bucks, so cheap for the goods this game delivers, I absolutely recommend this game especially on a sale. Thanks for reading!
love it so far miss my old days of my sim aquarium in the early 2000s ect as a kid but this 100% fills that itch only thing id say is the tanks are way to small and restrictive even in the sandbox mode ik the game is early yet and i hope that gets changed in the long run
同じゲームのAquarium Designerと比べて、 こっちの方がやれることが多い。 あっちの方がシンプルなような気がする。 あとは見た感じの好みとかかなぁ。 安い方を買うのもアリかも。 でも自分的には両方買ったが、 こっちの方がおすすめかなぁ。。 退屈しないし。
uno dei migliori software virtuali aquariums ,
I've bought this after having to give up on my childhood dream of having an aquarium, since reality turned out to be harsher than I imagined and my teenage self couldn't take it anymore after a few years. It's been healing. It's not the same, fish are not actually moving and especially behaving like the real ones, but if you're not familiar with the species, you won't be able to tell. I am and I miss my real fish, but here they can't die, be eaten (unless you enable it), starve themselves to death even though you are trying everything to get the food in front of their faces or fell for an ilness that's literally mold eating them alive while you can't bring yourself to end their suffering. You don't have to clean up half-eaten bodies, clean the filter every week even when you are too tired, deal with algae that grow everywhere and nothing you are trying helps, or plants that are constantly getting digged up by some of the fish just because they want to. It may be merely a simulation, but at least it's actually relaxing. Also it looks amazing, while managing to run on my laptop with integrated graphics without any problems. In general I really recommend it if: - you want to relax - you'd like to design aquariums (although the choice of decorations is rather limited, there's still a lot you may come up with) - you'd like to experiment with recoloring and mixing species of fish (practically endless possibilities) - you can't afford a real aquarium - you are a sensitive person that would get really attached to fish or be disgusted by the residue that has to be cleaned - your child wants to have an aquarium I wouldn't buy it for gameplay though, even the cleaning of the glass is done just by clicking a button and you can't breed your fish, it's quite boring when you want to do anything besides designing and watching. Unless you are a nerd fascinated by water chemistry and keeping everything just in the right balance - then it's probably the most realistic simulator out there (I had no idea there even is so many factors you should take into account; maybe things would turn out differently if I did, but maybe not, it is just really difficult to create an artificial ecosystem in such a relatively small box).
Its an ok game but Im sad not to see shrimp or crayfish. Also as far as scientific simulation vampire crabs can go underwater for a long time but they dont live underwater. they will die from lack of air for the right person this is a great title, for me not so much
Bought this trying to scratch the itch for my aquascaping desires. It didn't quite scratch it. Yea there's a bunch of fish. But the plant selection leaves a lot to be desired. The rock shapes are okay but while there's variety in shape (while not really enough), The rock styles feel subpar. Typical aquascaping style rocks aren't really featured much, and they just feel like chunks of rock. I also just really did not like the fish behaviors. Bottom dwelling fish swimming in the middle and top sections of the tank most of the time threw me for a loop. The mechanics are also a bit confusing. You have buttons for rotating scape items but also an xyz axis to rotate it by mouse. If you utilize the buttons the object can only rotate one direction but also TILTS ITSELF AT TIMES, so adjusting things like rocks that aren't entirely flat is a pain. Trying to flatten or round out the landscaping is difficult. I could not for the life of me get the landscaping to look the way I wanted it in the 45 minutes I played. If you can get past the controls, limitations of hardscape and plant options, and corydoras that think they're gouramis, it's a great game. Definitely something to play if you wanna make a cool looking fish tank and aren't obsessive over everything being to the "t" accurate.
symulator petarda , panowie dodajcie (Pterois volitans) pliz 10\10 super polecam !!!
Very nice game with realistic fishes (and some other animals too) of tons of different species. It's perfect if you love aquariums but can't have one of your own. And the cross-breeding feature is fun to play around with to make unique mix-and-match cross-breed fishes.
Related
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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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