I don't know if its just me, but before i knew what to do i thought you had to kill the ghosts that came out of the ships too.. but soon found out different when i started losing lives... however, in doing this i found it was funner to kill the ghosts as well... this also kind of adds to the difficulty too because if in later phases the ships get much faster, or just a combo of multiple ships are sent out at once... your still achieving your goal of having to miss the ghosts sometimes to hit the ships that are closer to exiting the screen... IF you don't hit the ghosts fast enough and you get overrun. Maybe add a new game mode that implements this (like an evil archer or something, lol..) and you can choose which game mode you want to play with their own leader boards.. All in all i thought it was a pretty fun game so keep up the great work!