I like how you combined two restrictions, one from the jam (64x64 resolution) and one self-imposed (LCD game-like graphics). It took me a bit to figure out what I was supposed to to, but not too much, which nicely replicates the way early games worked (without any manual/tutorial, you just try out random things until you understand what are you supposed to do).
All in all, it is a fun and lovely little game. Well done! :)