Nice job, dude! The game works really well, and it looks really nice! I love the polish of giving all of the food subjects happy and panicked idle animations!
The only mechanical thing that was hard to parse for me was the queuing up of subjects. I think it would simplify the game nicely if you did away with the queuing and just made cannons load when you press a qwer key while king samu is over the spot. (you might be able to put a cool animation where he throws the subject into the cannon).
Also for some reason, king samu was just a black box for me.
Good job, man! I'm really looking forward to seeing what games you make in the future!