Promising a new kind of open-world experience, Sierra Entertainment and Radical Games today lifted the lid on Prototype for the PlayStation3, Xbox 360 and PC.

Embarking on an adventure of conspiracy, deception and deadly shape shifting action, Prototype follows the story of Alex Mercer - a man haunted by his past, fighting a secret war in New York City. Mercer's shape shifting powers allow him to become an exact replica and steal the skills or powers of anybody that crosses his path.

"Radical Entertainment has a strong pedigree of critically acclaimed, best-selling open-world games, and Sierra Entertainment is excited to see them craft an original game that has already fired-up the imaginations of press and gamers alike," said Martin Tremblay, president, Worldwide Studios for Sierra Entertainment. "PROTOTYPE represents the strength of Sierra Entertainment's internal studios and our commitment to creating original and exciting games."

"Radical Entertainment set out to create the most dynamic video game character ever imagined. From free-form movement to over-the-top combat action; PROTOTYPE can climb or wall-run across any surface, jump 30 stories high, and destroy anything that crosses his path," said Kelly Zmak, president of Radical Entertainment. "Our team at Radical has built upon the technology that drove our previous best-selling games and now has the freedom to dream big and imagine a powerful character in a sprawling city like New York, cloaked in a conspiracy and ripped from today's headlines."