Fish Don't Return

Programming fish

Fish Don't Return is a PC programming game set in the Mariana Trench. You spend coins to buy a fish, build its instructions from blocks, then release it to search for coins and treasure chests. Once it’s in the water, it follows the program on its own until something stops it. Coins fund more fish, while chests contain new programming blocks and fish types.

Blocks read like parts of a sentence and snap together, so you don’t type code or have to get syntax right. A basic instruction can tell a fish to turn toward a coin and swim forward, or rotate right when it doesn’t see one. New blocks let you build more involved plans, such as diving below a set depth, waiting until a hunter can’t see the fish, or retracing its route when its health runs low. A fish can also send a ripple to call others.