This is my game - https://itch.io/jam/gmtk-2019/rate/461728
This is a puzzle platformer where you get one jump. It starts off pretty simple, but quickly starts to ramp up after my favorite mechanic is added - switched/2 state blocks! With portals, springs, 2 state blocks with levers, moving platforms, and most frightening of all, stairs, there are tons of interesting puzzles (around 25ish iirc :D) Level 7 became unsolvable late in the cycle (which is a shame because it was my favorite puzzle). Apologies about that, but you should be able to glitch through it.