Modern Warfare 2 was released in four different retail versions across the PlayStation 3 and Xbox 360 platforms: Standard, Hardened, Veteran, and Prestige.

The game breaks away from the World War II setting of previous entries and is instead set in modern times. Developed over two years, Modern Warfare was released in November 2007 for the PlayStation 3, Xbox 360, and Microsoft Windows and was ported to the Wii as Call of Duty: Modern Warfare  Reflex Edition in 2009.

A simple smile can trigger the release of neuropeptides that improve your neural communication. It also causes the release of neurotransmitters such as dopamine and serotonin, which can boost your mood. Think of smiling as a natural antidepressant.

MPAA. Rated R for strong violent content and grisly {img}, and language.