Call of Duty: Modern Warfare 3 is a first-person shooter video game, developed by Infinity Ward and Sledgehammer Games, with Raven Software having assisted in development. It is the third installment in the Modern Warfare series, a direct sequel to 2009's Call of Duty: Modern Warfare 2, and the eighth Call of Duty installment. Best shooter out now.
"Half-Life 2, the sequel to Half-Life, is a first-person shooter video game and a signature title in the Half-Life series. Developed by Valve Corporation, it was initially released on November 16, 2004, following a protracted five-year, $40 million development cycle, during which a substantial part of the project was leaked and distributed on the Internet."