GameSetWatch has a piece up reporting on a lost title in the Halo universe
. The game, slated for the Gizmondo portable device, utilized a unique control scheme. From the article: "... the game, had it gone into production, would have used the Gizmondo's back-mounted camera to detect motion and provide a 'mouselook'-like effect as you swiveled the handheld around, enabling the player to change the camera view just by physically rotating the machine. Whoa."
This game has been rumoured in the past, but this time around GSW has the facts to back things up.