I also had problems to play, sometimes the menu buttons don't react and sometimes no button is selected and I have to manually restart the game. After this, the game wasn't in fullscreen any more. But after a few resarts, it somehow started and I could play.

The controls aren't very comfortable with a keyboard maybe it is better with a joypad. My biggest problem the shooting - enemies that are far away can't get hit as the laser moves to slowly, and there is some time before really firing, so enemies in front of you always kill you. To aim is also difficult because you have to shoot while using the jetpack (not always but sometimes of course) and when you shoot you loose a lot of time where you could ran away from the enemies and refuel.

So the game looks interesting but I coudn't get really into it. (I'm sorry for this)

can't play the game

I hit enter doesn't do anything.

Am I doing something wrong?

Edit: so i think i can't start the game becuase my cursor isn't visible