A really nice game. You did an awesome job on the black hole shader, did you follow a tutorial for it? (if so, I would like a link to see why and how it works :) ). Only the controls are a bit stiff (Guessing you didn't use a rigidbody and moved the transform manually. Transform Translate maybe?). Anyways, you keep going at it!
Edit: The menu is awesome, I love it :)