I thought up a game while making some fusions basically you take a sprite sheet and than use four sprites adjacent to each other in a sqaure. The game starts as so, Someone chooses a base.
For my example I chose Furret than with my snipping tool I made a sqaure and Chose Furret Lapras Ditto and Hoothoot so I fused the of them together and made this
Than since I submitted the 4 way fusion I could choose the next base Misdreavus
So someone else would than find Misdreavus on the sprite sheet and make another square and than make it into a 4 way fusion and so on and so forth