Fantasy Aquarium

Fantasy Aquarium is an idle aquarium and collection game. You acquire unusual fish as juveniles and fill aquariums with them, with a shopkeeper appearing alongside your tanks.

Fish grow over real time, including while the game is closed. Mature fish can be sold for gold or kept in a tank to generate ongoing income; that gold can fund more fish and aquarium decorations.

Collect fish across different rarities and color variants, and unlock themed aquariums and decorative items as you progress. The game also includes a fish encyclopedia, music, and ambient sounds.

Players who enjoy the game often praise its pixel-art look, relaxing music and ambient sounds, themed aquarium scenes, and the ability to earn income while away. Some appreciate checking in occasionally to grow a fish collection at an easy pace. Other reviewers find the hands-off loop too limited, and describe late-game collection as repetitive because rare fish can take substantial time and repeated attempts to obtain.