It's a brilliant platform puzzle game! I love that dimension changing mechanic, i imagine it's quite difficult to pull of. Making a puzzle game is hard in general so you deserve extra praise for it i think. I also love the monochrome game boy style visuals and the 8-bit music. This is one of the best games i played in the jam so far, especially in terms of game design. Great job!!
PS: I'm dead stuck on level 6