CSI: Crime Scene Investigation is the first CSI Las Vegas game. It was developed by 369 Interactive and published by Ubisoft on Windows on March 26, 2003 and on Xbox on December 14, 2004. The Mac version was developed by EPCConnect and published by Aspyr on December 6, 2004. Like all of the games in the series, there are five individual cases which must be solved. The fifth case ties together the previous four cases.