Genuinely beautiful game, while music is not awe inspiring, the gameplay, and the feeling it inspires in you is great. It makes space feel vast, empty and open, and not just set to a small area; like it should be. The controls, while confusing, make you feel like you're in an actual spaceship. Everything about this game is perfect, and deserves more work. I'm simply floored you're not charging people to pay this, but at the same time glad. ;)
You should add Burgalar Alarms and Jammers. Alarms could be attached to windows by guards and would start blaring with a graphic indicating where it is when a thief tries to enter the window. Thieves could use jammers to temporarily shut down light systems, but for a manner of time. They could be pretty awesome kill streaks! :D
This combines Mario Kart and Tiny Wings in away that doesn't feel like copying but give the player a comfortable feeling with the controls and play style. 5/5
 "League of Angels"){kind=icon}
 "Anti-Idle: The Game"){kind=icon}
 "Cardinal Quest 2"){kind=icon}
 "Learn to Fly Idle"){kind=icon}
 "Astrox"){kind=icon}
 "DarkOrbit"){kind=icon}
 "Flappy Bird Flash"){kind=icon}
 "Diggy"){kind=icon}
 "Of Guards And Thieves"){kind=icon}
 "10 More Bullets"){kind=icon}
 "Amorphous+"){kind=icon}
 "Dragon Pals"){kind=icon}
 "Dillo Hills 2"){kind=icon}
 "Give Up"){kind=icon}
 "Big Head Bash"){kind=icon}
 "The King's League: Odyssey"){kind=icon}
Ummmmm..... wut?