The dimension hopping mechanic is very cool. At first I had a hard time using it, but once I figured out I "take a peek" into the other dimension by jumping and quickly pressing V twice I started making some actual progress.
Accidentally falling off the screen on level 3 by switching gravity was unexpectedly hilarious.
Love the groovy tunes.
I would definitely like to see some "coyote time" considering how many times I missed a jump at a platform's edge (this can be very annoying).