ElecHead
ElecHead has you play as Elec, a small robot on a mission to bring light back to the world. When Elec touches walls, floors, platforms, switches, and more, he makes electricity run through them, activating them.
ElecHead is a fun and very short platformer with lots of puzzles and secrets. The game starts simple enough, but I quickly came across puzzles that stumped me for a while.
Finishing the game is not too difficult, but getting all the secrets is going to challenge you and is very satisfying. If you're looking for a good puzzle game to finish in an afternoon, ElecHead is a great pick.