:) for readers, the opening screen allows you to test moving and firing :) the balls swell up after a shot, if you fire too soon it doesn't have enough velocity, as a parallel for galaxian's timing dynamic. there's some "perspective tilt" to deal with and wobbliness, with practice one can fire upwards when banking by quickly changing direction, it fires in the direction the length points :) just for a larf, party game or something.