Design, scape, simulate and enjoy your very own aquariums on your PC with Behind Glass: Aquarium Simulator.

Powered by our latest 3D aquarium engine, you can easily set up and enjoy the details of lifelike fish, crabs, plants, decorations, algae and more. Topped off with realistic 3D effects, you may not be able to tell the difference between your monitor and a real aquarium.

Just take a look at the screenshots and videos - these aquariums are all set up with Behind Glass: Aquarium Simulator.

Use the windowed mode to enjoy your aquariums all the time on your primary or secondary screen. We have included some beautiful sample aquariums to get you started and give you some inspiration. Use the Steam Workshop to show off your virtual creations and visit other aquariums.

We currently offer 193 species of fish/crustaceans (freshwater and saltwater) and various decorations. We have also added a crossbreeding lab, which allows you to create an 'unlimited' number of hybrid fish species and recolour all your fish. More and more content will become available with our regular updates.

Behind Glass currently features a Designer Mode and a Simulation Mode. The designer mode allows you to create your favourite tanks without the constraints of the real world. The simulation mode includes water chemistry, plant growth, fish growth and algae growth, as well as various equipment to set up.

Help us shape the future of Behind Glass by giving us your feedback via the Steam forums, our Discord, or by email. You can actually have a major influence on our future development efforts! To keep aquarists happy, we need the input of expert aquarists!