to all people complaining about the fact that it is a demo : Buy the full game. 5$ is really nothing for anybody, so take a shot, it's worth it !!!! I really hope you'll add many more levels, content and challenges, i've already completed 100% of the game...
 "Achievement Unlocked"){kind=icon}
 "Starmada"){kind=icon}
 "Defender's Quest (lengthy!) Demo"){kind=icon}