Eidos Interactive has announced a return to the war-torn jungles of Vietnam in Shellshock 2: Blood Trails, a gritty psychological first-person shooter.

At the height of the Vietnam War, a covert ops cargo plane carrying a top-secret consignment known only as 'Whiteknight' is lost over deep, uncharted jungles. Special Ops soldiers are immediately dispatched to the scene to retrieve the top secret shipment and one-by-one they disappear without a trace, until one month later, one of them suddenly walks out of the jungle.

"Shellshock 2 is very different to any first person shooter you've seen before; at times it feels more like you're in a horror movie than a game," said Lee Singleton, General Manager of Eidos Game Studios. "Survival takes on a new meaning as you fight against all sides of the conflict: your enemy, your allies and the victims... the casualties of Whiteknight, an enemy that ultimately has no side."

Shellshock 2: Blood Trails will be released for Christmas 2008 on the Xbox 360, PlayStation 3, and PC.