Nice little earth defense game! My only criticisms are the music is a bit repetitive and gets irritating after a while, the other one is it would have been nice to have the arrow keys as an option since the controls feel cramped all being on the left hand, also the A & D options are not nice for people with AZERTY keyboards, but aside from that, the soundfx were good, the movement was solid and the game felt very fair. Good job!