
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 →
Media

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
[h1]Experienced on the Meta Quest 3[/h1] You can view my 3D in VR gameplay here: https://youtu.be/YQ4jKenh_fI Yes, you can play Behind Glass: Aquarium Simulator in 3D in VR using the Geo-11 3D mod. You can render the 3D into SBS 3D or TAB 3D, etc. You then just need a way to view the 3D in VR with programs such as Virtual Desktop streamer or Bigscreen VR. I set the separation and convergence to 15 and the 3D looks amazing on the Meta Quest 3. The 3D looks almost perfect, with only a few minor issues that are barely noticeable on the edges. Other than that, the mouse cursor is not aligned correctly. I strongly recommend using Virtual Desktop so that you can easily set your motion controller to act as a mouse cursor. It's aligned correctly this way. Performance was great on my RTX 5090. I was getting 164/165 fps with graphical settings at near max. I recommend disabling depth of field. [b]3D in VR Rating 9/10.[/b] [quote]I bought this game (in a bundle)! If you enjoyed my review, please consider joining my Steam Curator group [url=https://steamcommunity.com/groups/Oculus_WMR]Oculus Rift Reviews.[/url][/quote]
酔わないゲーム 魚の動きがかなりリアルです 昔ネオンテトラ飼ってたの思い出しました
My son always wanted an axolotl, but we just don’t have room. Found this and he made his fish tank with all the plants and a baby axolotl and a mummy one. He is over the moon and it’s running 24/7 I should say the requirements are actually MUCH lower than advertised (running on an iGPU at max settings ok) Absolutely thrilled! My only wish is that there was a keyboard shortcut for day/night light mode as it breaks the immersion using a mouse. Anyway it’s beautiful and I highly recommend.
add skrimps. kthanks
Just the balance of the world... ♥
This is an unusual aquarium sim in that fish behavior is realistic. Catfish rest on the bottom, clownfish seek anemones to hide in, Big fish bully and chase little fish. The jellyfish DLC is quite lovely. One minus: filters and heaters and so forth do not actually appear visually. Warning to Linux users: I am running this game with Proton GE, and if you don't know what that is you need to do a little research. I am amazed that fish interact with plants and other items in the environment. I have not yet tried realistic mode in which fish can die or eat each other, and here the game itself tells you that you are on your own to research PH levels and other aspects of aquarium maintenance. Another Linux note--you seem to have to turn off the Steam cloud in order to save games. If you are running in Windows no doubt you'll have an easier time. I give this game a thumbs up. It's very relaxing to sit back and watch the virtual aquariums.
I bought this game before starting my own real life aquarium. It has a simulator but the choice water plants is limited. After have my own real-life aquarium, I notice that the fish motion and behavior is far from realistic. especially for the tetra fish and aspitogramma fish. The simulator also lacks of algae control which real life aquarium has to consider.
アクアリウムをやったことある人、ない人におすすめです。ただシュミレーターモードはリアルのアクアリウムとはPH、KH、GH、NO2、NO3、塩素と簡略化されてないのでシュミレーターモードをプレイする方は気を付けてください。私はテトラのテスト6in1と比較してみましたがまったく分かりませんでした。 いい所 今のバージョンだと熱帯魚(淡水)、海水魚、日本の淡水魚、DLCのクラゲ水槽が作れます。 海水魚は魚が多めでいいのですが、お店に売っている海水魚と少し色が違うので「え?」と思う事があります。淡水熱帯魚も魚が多いです、ただグッピーでも色が単色だけなので他の魚と交配しないと別の色ができません。日本の淡水魚はオイカワと金魚がありますが、オイカワは婚姻色がでていい感じです。金魚は小赤の色落ちにしか見えません。過去のバージョンアップにウグイが追加されたと書いてありますが、どこにもないです。DLCのクラゲ水槽は5.6種類のクラゲがいます。うまく作ると水族館のクラゲ水槽が作れます。 悪い点 底床の土をソイルにするか、ソイルを追加してほしい。石バリエーションと石の名前を追加してほしい。水草の種類が少ない。サンドボックスモードでもフィルター付けて水の流れがほしい。シュリンプ、エビ類がほしい。日本淡水魚の種類がもっと欲しい。例えばカワムツ、ヌマムツ、ドジョウ、アマゴ、ヤマメ、ウナギなど。海水魚でクリーナーフィッシュ(ホンソメワケベラ)、ミズタマハゼ、ガーデンイール(チンアナゴ)などもほしい。 その他 ワークショップで他の方の水槽をよく見てるのですが背景で結構誤魔化してるのがあるのでもっとADAのレイアウトっぽい物が見たいです。120㎝、180㎝の水槽が作れるならドラド、ターポンとかも欲しいですね。 欲望ばかりですいません。リアルで寝室に三つ水槽があってそれぞれに色々な魚を飼っているのでどうしてもこうなってしまいます。ちなみに熱帯魚飼育歴は13年です。
I appreciate what they are doing, but I wish I could more closely simulate the freshwater fish I want.
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!
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.
Related
| Guardians Frontline | $197.2K | 347 | 82% | $24.99 |
| Guns n Zombies | $197.3K | 977 | 69% | $7.99 |
| Brush Burial: Gutter World | $197.3K | 829 | 94% | $9.99 |
| Pro Cycling Manager 2018 | $197K | 415 | 76% | $14.99 |
| YEAH! YOU WANT "THOSE GAMES," RIGHT? SO HERE YOU GO! NOW, LET'S SEE YOU CLEAR THEM! | $197.3K | 1.4K | 72% | $9.99 |
| Guns and Nuns: Storming Hell | $197.3K | 770 | 88% | $9.99 |