Steam app 1611580 · updated 12 Sep 2026, 22:34 UTC
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!
251 hourly samples, with the daily peak drawn over them. Weekends are shaded.
62 months, August 2021 to September 2026. The highest number of people in the game at once, each month, on a time axis -- a gap in the record stays a gap.
The highest number of people in the game at once, each month. Four, because four is as far back as the source keeps anything finer than one figure a month.
31 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.
31 days as the curve, each the highest figure that day. Behind it, 162 hourly samples from 13 Aug, which is as far back as the source keeps every hour. Weekends are shaded.
10 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.
Behind Glass: Aquarium Simulator was released on 8 Jan, 2025.
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A blank audio cell means full audio was not marked in the returned language list.
11 achievements in total.
25 developer announcements, Sep 2021 to Jul 2026 · times in UTC
Here's another update with new content and improvements! This time, we've added plenty of new inhabitants and a decorations DLC for your aquariums:10 New Fish Species: Black Neon Tetra, Butterfly Barb, Dwarf Pencilfish, Hourglass Basslet…
BitBros GamesIt’s been some time since the last content update — and now your aquariums are getting a major expansion!This update introduces 20 brand-new fish species, including standout additions such as the vibrant Blood-Red Jewel Cichlid, the…
BitBros GamesThis update introduces 11 new fish species, including highlights such as the Hawaiian Cleaner Wrasse, Spanish Hogfish, Midas Cichlid, and Three-Spined Stickleback.Alongside the new additions, the update includes various bug fixes and…
BitBros GamesIt’s time for another update packed with fresh content and enhancements. Here’s what’s new in your aquariums:20 New Fish Species 🐟Black SurgeonfishChinese High-Fin Banded SharkCuckoo WrasseFlagtail ProchilodusGold Nugget PlecoHarlequin…
BitBros GamesWe’ve just released another update with new content and improvements -- here’s what’s new in your tanks: 10 New Fish Species: Bengal Loach, Blue Botia, Candy Basslet, Crimson Loach, Diadem Dottyback, Firetail Dottyback, Redfin Tiger Loach…
BitBros GamesBehind Glass is Leaving Early Access! What’s New in the Full Release: The Axolotl joins the species list. Six turtle species now swim alongside your fish. 10 new fish species to further diversify your aquariums (Redstriped eartheater, Mdoka…
BitBros GamesThis update features a revamped crab engine, enhancing your existing crabs and introducing two new species. Use the recoloring feature to fill your aquarium with a variety of bustling crabs. We've addressed feedback regarding the fish…
BitBros GamesIt's time for an update once more. To put it simply: Our focus has been on fish diversity, and we're delighted to introduce 81 new fish species. Enjoy! For a list of all 193 species, please see the pinned post in Discussions. New species…
BitBros GamesIt is update time again. So what is new? - We are introducing the new plant engine, which brings a fresh look to planted aquariums in Behind Glass. Be prepared for a visual upgrade and some changes: all plants, including existing ones, have…
BitBros GamesThis time around, it is a smaller update. The main reason is that we have identified some smaller issues, which should be addressed. Luckily, this also gives us the opportunity to integrate some new features and enhancements that we've been…
Patch notesIt is update time once again. So what's new before Easter? Get ready to meet new aquatic creatures: Guppy, Domino Damselfish, Six Line Wrasse, Coral Beauty Angelfish, and Maroon Clownfish. We have added more decoration options (stones…
BitBros GamesWe hope you are enjoying the new simulation mode! This update brings some extensions for your simulation as well as general additions. General: We have added some new coral species Improved ambient occlusion (can be switched off in Setting…
BitBros GamesIt has been some time since the last update. We have had quite some work to do, and have now decided to roll out a first version of our new simulation mode, involving water chemistry! Some notes to get you transitioned: When executing…
BitBros GamesWhile still working on our water chemistry module, we have prepared a smaller update to shorten the waiting time for you: There is 10 new species: Banded angelfish, Convict surgeonfish, Emperor angelfish, Midget sucker catfish, Ornate…
BitBros GamesWe have been preparing another update for our aquarists and aquascapers: You can now choose between day and night mode. Night mode currently disables your lightning. The future might bring further specifications here. In Photo mode, we have…
BitBros GamesWe have gotten quite an amount of new users during Simfest: Hobby Edition lately. Thanks to you for joining our community! While gladly watching this happen, we have prepared an update for all our loyal players: You can now recolor your…
Patch notesWe are happy to announce a shiny new feature within Behind Glass: the Breeding Lab. Players having played our mobile Fish Farm series might know this unique cross-breeding feature very well. In the Breeding Lab, you can select two different…
BitBros GamesThis update mainly brings new content: 1) We have added 14 new fish species: Agassiz's dwarf cichlid Sardine Cichlid Rummynose tetra Six-barred Lamprologus Diamond tetra Redeye tetra Bloodfin tetra Cherry barb Odessa Barb Celestial pearl…
Patch notesWe hope you can enjoy the new features and changes in this update: You can now place your aquariums in room. You can select from initially two apartments, having 3 to 4 possible spots for your aquarium. Please note that each spot has a…
Patch notesThe next update is in the final stages of testing! Our main additions are: - You can now place your aquarium in a room - We have added three-dimensional backgrounds (in your tank) - We have decreased the minimum and increased the maximum…
BitBros Games- 10 new fish species (Smith's butterflyfish, Blackwedged butterflyfish, Royal angelfish, Peppermint angelfish, Black ruby barb, Gold barb, Black molly, Harlequin rasbora, Honey gourami, Pearl gourami) - Improved schooling of fish - Corals…
BitBros GamesWe will soon be publishing an update. This is included: - 10 new fish species (Smith's butterflyfish, Blackwedged butterflyfish, Royal angelfish, Peppermint angelfish, Black ruby barb, Gold barb, Black molly, Harlequin rasbora, Honey…
BitBros Games- We have added crabs - Integrated first sound effects and music - Publish your tanks in the Steam Workshop, and tanks of other players - Rotate decoration using keys (QWEASD) - Improved sorting and filtering for deco and fish - Feed (press…
Patch notesWe have been working hard. With the next update, among other things, crabs are coming to your screen!
BitBros GamesConfigure several spot lights Run Behind Glass in windowed mode Use the auto-camera in 2D mode More content (fish and deco) Bug fixes (custom background issue and several smaller ones)
Patch notesEverything Steam lists as add-on content for this game, newest first. Prices are left out on purpose: the store answers this page in one currency and it is not the reader's.
| Name | Platforms | Released |
|---|---|---|
| Behind Glass: Aquarium Simulator - Decoration Pack | WindowsmacOS | 13 Jul 2026 |
| Behind Glass: Aquarium Simulator - Round Tank and Jellyfish Pack | WindowsmacOS | 16 Apr 2025 |
What Steam runs, and with what. Straight from the app configuration.
| Description | Executable | Arguments | Platform | |
|---|---|---|---|---|
| Launch | BehindGlass.app | macos | ||
| Launch | BehindGlass.exe | windows |
The folders Steam Cloud syncs. The root is a token Steam uses for a location on your own machine, not a path this page can know.
| Root | Folder | Files |
|---|---|---|
WinAppDataLocalLow | BitBrosInc/BehindGlass | data |
WinAppDataLocalLow | BitBrosInc/BehindGlass/bg | *.tex |
WinAppDataLocalLow | BitBrosInc/BehindGlass/2 | data |
WinAppDataLocalLow | BitBrosInc/BehindGlass/2/bg | *.tex |
WinAppDataLocalLow | BitBrosInc/BehindGlass/3 | data |
WinAppDataLocalLow | BitBrosInc/BehindGlass/3/bg | *.tex |
WinAppDataLocalLow | BitBrosInc/BehindGlass/4 | data |
WinAppDataLocalLow | BitBrosInc/BehindGlass/4/bg | *.tex |
WinAppDataLocalLow | BitBrosInc/BehindGlass/5 | data |
WinAppDataLocalLow | BitBrosInc/BehindGlass/5/bg | *.tex |
WinAppDataLocalLow | BitBrosInc/BehindGlass/6 | data |
WinAppDataLocalLow | BitBrosInc/BehindGlass/6/bg | *.tex |
WinAppDataLocalLow | BitBrosInc/BehindGlass/7 | data |
WinAppDataLocalLow | BitBrosInc/BehindGlass/7/bg | *.tex |
WinAppDataLocalLow | BitBrosInc/BehindGlass/8 | data |
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WinAppDataLocalLow | BitBrosInc/BehindGlass/9 | data |
WinAppDataLocalLow | BitBrosInc/BehindGlass/9/bg | *.tex |
WinAppDataLocalLow | BitBrosInc/BehindGlass/10 | data |
WinAppDataLocalLow | BitBrosInc/BehindGlass/10/bg | *.tex |
WinAppDataLocalLow | BitBrosInc/BehindGlass | globaldata |
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