A platformer with solid controls and mechanics which evolve with each stage of a butterfly's growth. I found that the digging mechanic controlled especially well in terms of its speed and turning.
The game's insect-themed aesthetic reminded me a fair bit of Hollow Knight as well, which is always a nice thing to be reminded of.
It's short and simple with a great low resolution GB aesthetic. It is a bit too easy to simply run past enemies or overpower them from a distance by shooting through walls, but the core gameplay works well enough for its short duration and the aesthetics help carry it to the end.