cool!
good effort, i don't know (yet) if you made other games but this one is pretty cool.
there is something i don't really like: graphics, try improve it, the radials of the canons make them look unreal. ok i should maybe not critisise because i have no flash submissions, but change the landscape and canon graphics, the pistol tower lvl V was good graphic!
9/10 stars, rating 5/5.
i like defense games make more man!