A Space Invaders type game inspired by my own Prizeturret, WarioWare: Twisted! and that one level of Karoshi 2.0.

Left - move in what would be the left direction were the screen right-side-up.
Right - move to the right, relative to the ground.

You fire automatically. Your missiles disobey gravity and will always fall "downward" regardless of the screen's rotation. The enemy's missiles do not, so try and avoid them constantly.