CES 2008, Las Vegas - Jan 7, 2008 - THX, Neural Audio and Sierra Entertainment, a division of Vivendi Games, announced that Prototype, a first-person shooter game, will be the first video game to feature Neural-THX Surround. The Neural-THX Surround technology enabled Radical Entertainment, an internal development studio of Sierra Entertainment, to extend the surround sound experience from 5.1 to 7.1, allowing gamers with Neural-THX Surround capabilities on their audio-video receiver to play Prototype in 7.1 discrete surround sound. Prototype will go on sale in the U.S. in fall 2008.