We  present  a  study  that  explores  the  use  of  a  commercially available  eye  tracker  as  a  control  device  for  video  games.  We examine  its  use  across  multiple  gaming  genres  and  present games that utilize the eye tracker in a variety of ways. First, we describe  a  firstperson  shooter  that  uses  the  eyes  to  control orientation. Second, we study the use of eye movements for more natural interaction with characters  in a role playing game. And lastly, we examine the use of eye tracking as a means to control a modified  version  of  the  classic  action/arcade  game  Missile Command. Our results indicate that the use of an eye tracker can increase  the  immersion  of  a  video  game  and  can  significantly alter the gameplay experience. Categories and Subject Descriptors H5.2. Information interfaces and presentation (e.g., HCI): User interfaces: Input devices and strategies General Terms Design, Human Factors Keywords Eye Tracking, Video Games. 							
						
							
					 															
					J. David Smith, T. C. Nicholas Graham