For some reason the textures didnt load, it just showed white.
I liked the firing mechanism, though it stuffed up occasionally.
Its a pity the the grenades didnt really explode that would've been cool.
The keys kept on deleting the floor, it happened with your train one aswell, I had to get the the last carraige while the train went on an infinite plunge
But beside from that, FUCKING AWESOME!!!
If you could find a way to make the ruler thing curve around the cannon, it would be easier to aim then.
Alot of times the projectiles went out spinning, but maybe thats only in rare cases.
Maybe make a button to delete the buildings behind the cannon for people with slow computers (like mine
Maybe make the battleships fire something after a certain time has elapsed, to make the game more challenging.