I make mediocre games that are for some reason almost always grid based or goofy restricted platformers. (I also used to speedrun griffpatch's Massive Multiplayer Platformer, PB of 1:03.XX)

Experimenting with the idea of
0 sprite platformer (jesus freaking christ fisheye is pain)
1 sprite 1 script platformer
each block used only once platformer
no-sensing platformer
min block platformer
(yes these are all actually possible :D )