Very good puzzle game! The game starts very slow (a bit of repetitive levels) in the first few levels, but once grabaron appears, a lot of hard levels start to arise. Very very good job for 48 hours, I believe this has potential to become a bigger game.
I agree with other comments that said that the level design is good enough to present the mechanics so no text was necessary, a restart and undo keys would be very nice, also some visual differences for the boxes when they are grabbed.