This is a fantastic game. Its really addicting and its an interesting take on a tower defense game. The art and music is really well done, though I would have liked some of that ambeint music from the menu in the game. There is a point you reach in the game where you're pretty much invinsible so there's nothing to do, but that is an issue with the amount of content at the moment and not the game itself. Add some levels weapon and defense variation and this is an amazing full release. the projectiles are a bit slow which works from a gameplay point of veiw but it makes the bullets appear really weak. and interesting problem that i'd like to see a creative solution to. Good work!