Visje by remco is a prototype adventure game made with PICO-8.
In this game you play as a fish, dashing and surviving through adventures. Use the ‘left and right’ keys to wiggle. The river flows very slowly and gets faster, so you need to get as far as you can. The red spikes hurt you and the yellow scales give you more life. Watch out for the light-blue currents. Also, plants can block you, but only horizontally.