Behind Glass Aquarium Simulator is a casual indie simulation game developed by BitBros Inc. Players can design, create and manage their own virtual aquariums with realistic fish, crabs, plants and decorations. The game features a realistic 3D engine that provides stunning visuals that make it difficult to distinguish a virtual aquarium from a real one. There are 193 species of fish and crustaceans to choose from in freshwater and saltwater aquariums.