Purrwood by darabos is an adventure puzzle game made for PICO-8.
In this game you play as a cat who goes on exploring different islands of puzzles where different jellyfish are stuck and you need to move them one by one to drop in the water below so they are set free again. But beware, the magnetic force surrounding the islands is hard enough that your ship goes dwindling in space, but proper focus will land you on the island safely. When you have collected enough gems, you can buy stuff from the shopkeeper in the bottom right corner of the game.