- Casual
- Indie
- Simulation
Game
Behind Glass: Aquarium Simulator
From the creators of the renowned Fish Farm series for mobiles: Aquascape your very own fish tanks on your PC. Featuring our latest 3D aquarium engine, you can enjoy the details of lifelike fish, plants, decorations, algae, etc. Topped with realistic 3D effects, your monitor becomes a fish tank.
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!
About Behind Glass: Aquarium Simulator
- Released
- January 2025
- Developer
- BitBros Inc.
- Engine
- Unity
- Platforms
- PC (Microsoft Windows) · Mac
Where to get it
Release, studio and platform data from IGDB. Store links go to the sellers, not to us. We do not sell games and we do not host files.
Browse everything
Sorted, filterable and paged. Every link goes to the author’s own download.
From the developers
Official announcements, newest first. Posted on Steam.
- Community AnnouncementsNew Fish Species & Decoration Pack DLCHere'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, Orange Clownfish, Polynesian Anemonefish, Raja Ampat Dottyback, Sunrise Dottyback, Tetra Toucan, and Tucanare Peacock Bass.New DLC: Decoration Pack – Unlock 5...
- Community AnnouncementsMeet 20 New SpeciesIt’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 striking Orangespine Unicornfish, the bold Sergeant Major, and the ever-popular Texas Cichlid.From colorful reef dwellers to fascinating freshwater personalities, t...
- Community AnnouncementsMeet the New SpeciesThis 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 smaller improvements to keep everything running smoothly.Thanks for playing and enjoy the new arrivals!Full list of new species in this update:Tanaka's possum wras...
- Community Announcements20 New Fish Species + Recolor Your GravelIt’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 HindHarlequin TuskfishJapan SurgeonfishLeopard Coral GrouperLumpfishPale ChubPike CharacinPolleni CichlidRed Sea Sailfin TangSiamese TigerfishSixbar Distichodus...
- Community AnnouncementsNew Fish, Jellyfish, Round AquariumsWe’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, Rosy Dory, Splendid Dottyback, and Yoyo Loach! Creature & Decoration Overview Window: We know it’s getting a bit crowded in your collection -- so we’ve added...
- Community AnnouncementsAxolotl, turtles, full versionBehind 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 White Lips, Blue acara, Severum Cichlid, Upside-down Catfish, Longnose butterfly fish, African moony, Aberrant Tricolor Scopas Tang, Narrow-barred Butterfly...
- Mods indexed
- 156
- Versions
- 0
- Newest tracked
- none yet
- Most disruptive update
- No breakage data for this game
of 1.7k on Steam Workshop
Most downloaded
Measured from the source's own counts, summed across every release.
- Lush fresh water 3Lush Fresh water forest1.3k downloads
- FullDreamColourFantasy fish in a big tank617 downloads
- AquascapeExample Aquarium601 downloads
- DarknessA littlebit Light in the Darkness524 downloads
- mangrove project v1443 downloads
- Reef LyfeTwo canyons diverge in a coral reef. Look for the little crabs hiding in the seaweed.322 downloads
- CitadelCichlid tank293 downloads
- Saltwater Reef290 downloads
- Deep Sea CaveA Deep Sea Cave276 downloads
- Moonlight ShadowNight time inspired tank with vampire crabs and a small variety of tetra. Lighting and overall look is a perfect tank to look at before hitting the nap sack!273 downloads
- ArchIt's an Arch, I don't know what else to say261 downloads
- SUNSETBamboo forest inspired on youtube239 downloads
- Large Shallow ReefA 360 viewable aquarium full of coral and fish to complement the scape.202 downloads
- Beautiful Cave195 downloads
- The Mangle CoastlineCoastal mangle roots tank195 downloads
- Infinity ForestEvergreen Forest with infinity arch. Probably my favorite build so far. Blends really well, and plays some tricks on your mind. ;-) Fish species are currently set up as a Myanmar biotope, but can be used for any kind of small community/ schooling fish (or whatever pleases you). Enjoy! Can be copi...193 downloads
- Amazon biotopeamazon stream biotope175 downloads
- Aqua home 2Fresh water forest150 downloads
- Diablo ThemeAnd the heavens shall tremble.147 downloads
- neons in driftwood146 downloads
- rock tankmade by shako143 downloads
- Black water135 downloads
- Korallen Riff133 downloads
- Reeferscape 3133 downloads
Browse all 156 Behind Glass: Aquarium Simulator mods Sortable by downloads, rating and date.
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Why Behind Glass: Aquarium Simulator mods break
A mod is compiled against one version of a game. When the game updates, anything that reached into the parts that moved stops working, and it usually stops working silently rather than with a message that explains itself.
That is what the table above counts. It is not a guess: each row is a mod the community has reported as broken by that specific release. The number is a fair measure of how disruptive an update was, and it is the reason people delay updating a game they have modded heavily.
Common questions
Does IndexGG host Behind Glass: Aquarium Simulator mods?
No, and it never will. Every download link points at the author's own page on Nexus, GitHub, CurseForge or wherever they published it. We index the ecosystem; the files stay with the people who made them.
Where does the compatibility data come from?
From the communities that maintain it in the open, not from guesswork. Each claim carries how it is known, so a reported breakage is never presented as though the author said it.
Why is a mod listed as broken when it works for me?
Compatibility depends on your exact game version and the rest of your load order. A mod marked as broken in one release may work fine on an older one, which is exactly why the version is recorded next to the claim rather than a bare yes or no.