If we are talking about pixel art, Baba is You is a very special game. It has got only the minimum: a rabbit named Baba, four controls for moving and basic designed levels. On every level the rules are written on the screen. After a few levels you realize Baba can not only push things, but he can also push the rules themselves. So to beat the levels, you have to change its rules.

Official site: https://hempuli.com/baba/