From Wikipedia: Red vs. Blue: The Blood Gulch Chronicles, often abbreviated as RvB, is a machinima comic science fiction video series created by Rooster Teeth Productions and distributed primarily through the Internet and DVD. The series chronicles the story of two opposing teams of soldiers fighting a civil war in the middle of a desolate box canyon (Blood Gulch), in a parody of first-person shooter (FPS) games, military life, and science fiction films. Initially intended to be a short series of six to eight episodes, the project quickly and unexpectedly achieved significant popularity following its April 1, 2003, Internet premiere. Rooster Teeth therefore decided to extend the series, whose fifth season premiered publicly on October 2, 2006.