A really nice idea honestly. I think that this really works as a platformer and the visuals themselves between the two worlds were pretty cool. I was a little confused about the green part and opening the door at the end but then i got it; maybe you could try to explain a little better. For the rest, i feel like the blocks were reeeeally floaty, maybe a little too much, or it could just be a skill issue on my part so take it with a grain of salt.