Awesome game. Beautiful artwork, great idea, great execution, great soundscape, very polished. I haven't played all of the other games yet, but so far it is my personal winner of this game jam.
But I also have a bit of constructive criticism:
- Some sprites suffer from pillow shading (even though their design is great otherwise). It's especially pronounced in the blue slimes when they are on the ground.
- The downward thrust move isn't particularly useful
- Please keep in mind that on many keyboards, the Z and X keys are nowhere near each other. That made it a bit awkward to play for a QWERTZ keyboard user like me. If you don't want to add key remapping to your game (and seriously, who has time and motivation to do that in a game jam), try to stick to "save" keys like arrow keys, ctrl, shift and space.
- I am missing the relation to the "pocket sized" theme. Seems a bit tagged on.
But that's all really just nitpicking. You did a great job in these 72 hours.