This is a great game. The features are interesting and well-executed. I think a problem this game has is that it's super difficult when starting out. The tutorial system was great, but after finishing it I still felt like I was being thrown into the deep end. The timer for the deliveries went down way too fast, for at least the beginning of the game and there were no stationary platforms to get your bearings straight. I think for the main base station it would be nice if it was stationary but the player can rotate it.
The game needs some more balancing, but overall the game is great and I like the ideas and direction you're going for it. Good job guys!