More like the Super Mario Crossover of shmups. Very cool!
The difficulty seems a little unbalanced, with the game generally being very easy and difficult sections only ocurring every now and then. Then again I was playing the Galaga ship which I think isn't recommended. When using that, the Afghanistan boss dies without even firing a single bullet! (on normal)
Couldn't find an option for two player which is a shame. Other than that though, a very good concept and I'm looking forward to updates!