I'm glad you liked it! Using the spacebar for shooting is good feedback. I preferred the gamepad and don't typically use keyboard for games, so I didn't think about the difficulty of using a trackpad -- that's good to keep in mind for our next game. If you like shmups, definitely try to get past the 3rd level. The 4th level only contains the final boss -- which is completely unique -- and I think you'd enjoy it. ;)