Great concept, but way too difficult for me.
I think it fits the theme well, and I like how it centers around a single mechanic. The levels are nicely designed to really take advantage of the mechanic and that's great.
But at the same time, the levels are just way too unforgiving. Maybe some checkpoints should be added? Or more levels to ease the player in at the beginning?
Overall an interesting game, good job!
P.S. I'd like to invite you to give feedback to our game as well! https://itch.io/jam/gmtk-2018/rate/300343