Not Bad but...
The game was nice and i LOVE the history story, in fact im german so it was interessting to know what happend in the english newspaper :)
But back to the Game: I think it would be more fun if you would add a "shop" i mean somethign where you could buy stuff for the turret instead of getting one upgreat every round. Maybe you could try to...Uhm..Change the skin of the turret, when you buy some upgrades. Or you could buy smaller turrets for help..and stuff...Oh and (as it was sayed allready) try to fix the attack points of the bigger airshiped, strange that the "Bullet" exploded on the cockpit but it gets lesser dmg as if i would hit the "main part".
Over all, i think the game is nice even if it takes to long for new upgrades.
8/10 5/5