Space Giraffe - XBox 360

On the surface, this game appears to be 'Tempest out of your mind', but there's some excellent depth underneath and a unique difficulty: unfortunately, you can't pick this up from gameplay videos.
Briefly: difficult is not only based on grid and enemy understanding, but also navigating visual/controller/auditory overloads. I've found myself navigating stages by the sound of the hit enemies makes! I trance out to this game after a play session! @_@