The game is chaotic alright!
I harvested one crystal and then all hell broke loose!
I couldn't survive one level. I think the game's too hard...
Once I pressed Q button too far from the crystal, a floating isle appeard in the air and in the console a lot of those kept flooding:
SCRIPT ERROR: _physics_process: Invalid get index 'global_position' (on base: 'Nil').
But the graphics were ok, there was a music and gameplay was there.