TBH the game is very hard to understand, but by trial and error I got it.
Once I spawned the ship and I spend some time on random stuff until I figure out you can push away the seed to grow it.
Ship control is very hard. It will definitely benefit from some damping for speed and rotation.
I have mixed feelings, but it's original and you even added coop mode? Nice.
Can I ask you to play my game and leave some feedback? See you in the comments and Thank you!