Developer and publisher Gameloft have announced the U.S. release of CSI: Crime Scene Investigation - The Mobile Game, based on the CBS primetime hit television series. The game allows players to investigate "the sinister side of Las Vegas," and incorporates an optional level of interactivity with in-game characters placing real phone calls to the player.

When signing up, players have the option of activating the interactive phone call feature; if activated, they receive a specialized call during the game for clues and tips that lead them to new crime scenes. The mobile game also features "detailed locations, spontaneous interrogations, 3-D views of evidence, and clever laboratory mini-games to help solve crimes," according to Gameloft.

The game plot was a collaboration with CBS Mobile and CSI Series Creator, Anthony E. Zuiker.

"We are very excited to be launching CSI: Crime Scene Investigation with all of its innovative features," said Gonzague de Vallois, Senior Vice President, Gameloft. "Our mission has always been to push the envelope on game development and we are confident we have succeeded with this game."

"This CBS Mobile game is the first of its kind utilizing outbound calling, which literally calls players to action," said Cyriac Roeding, Executive Vice President, CBS Mobile. "Your cellphone rings, and a detective calls you to the scene - just like a real CSI detective. This combination of game play with popular content and a whole new level of interactivity represent enormous entertainment and business potential for the mobile world."