Behind Glass: Aquarium Simulator

Behind Glass: Aquarium Simulator

BitBros Inc · 2025 · Underwater, Realistic, Relaxing, Life Sim, 3D

PC
Very Positive95% · 382
Best price 25 Fair price
$11.99-20%
$14.99lowest tracked $8.99
Steam Buy at Steam

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Steam
Steam
Standard Edition · Steam
-20%
$11.99
$14.99
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Screenshots

About Behind Glass: Aquarium Simulator

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 260 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!

DLC & expansions

🎁 Complete the collection

Base game + 2 of 2 DLC at today's best prices.

$21.97
to own everything

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

Recommended Apr 11, 2026
add skrimps. kthanks
5 found this helpful
Recommended Jun 5, 2026
I liked the UI and the choice of tank sizes and shapes, what i dislike is that there are no shrimp and snails and some goups of fish need more for example freshwater gobies there is currently only one species and they should add peacock gudgeons as another species for that group or stiphodon gobies. (: great game 5/5
2 found this helpful
Recommended May 31, 2026
Very realistic aquarium game, the fish are beautiful! I hope they continue to add more plants and species.
1 found this helpful
Recommended May 21, 2026
the endless possibilities are really nice.
1 found this helpful
Recommended Mar 28, 2026
LOVE IT so realistic and so cool but it gets boring after i while
1 found this helpful
Recommended Jul 10, 2026
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

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