Really cool stuff I think with some refinement can be such a cool title. The idea of being the mechanic on the dock is really cool and when I found my ship inside an asteroid belt was in shock and awe(and dead). Its a great idea with a great artstyle. I think if the controls were a bit more snappy and satisfying and the resource refined(I was imagining that you throw them instead of placing in a menu) it would be a new type of tower defense game.
Well done