Baba is you (Arvi “Hempuli” Teikari)

Baba Is You is a puzzle game where the rules you have to follow are present as physical objects in the game world. By manipulating the rules, you can change how the game works, re-purpose things you find in the levels and cause surprising interactions!

http://www.hempuli.com/baba/

++ independent games festival (SF) award winner