"By merging graphics with props in the physical world, handheld Augmented Reality games pull the player through the small screen and into a larger merged play-space. Our primary motivation for this AR game was to explore fast-action first-person augmented reality, where the camera controls and movement that would typically require a mouse and keyboard are handled directly by simply moving the device. Advanced tracking technology allows the player to quickly zoom in and out and view the world at steep angles, making this a highly interactive and engaging game. Finally, we wanted to test tangible input mechanics, such as placing and shooting Skittles to trigger in-game events."