Pretty fun game, I played all three levels and i really like how the game makes you prioritize different cannons. God game design is about giving the player interesting choices and I feel like you did that very well. My only bit of feedback is that the 1st two difficulties are a bit to easy once you've cleared out the initial enemy ships. (this is because the next set of enemies will only spawn from one side so you can kind of just spam the the cannon). I think special credit has to be given for making the cannon shooting feel so fun. The game is good presentation wise, I always understood what i was looking at. The sounds and soundtrack were also well done. Overall, I had a good time! Thank you for sharing your game.