Great concept!
Very nice concept. Game is easy to learn, so I could get right in to the fun.
Great choice of music too!
The only thing I can think of right now that might add a bit more fun twist to the game is having different maps every so many levels. That way players won't be bored with the same square map after playing for a while.
Awesome game otherwise. Keep it up! =)
5/5, 9/10