Resistance is a series of first-person shooter and third-person shooter video games developed by Insomniac Games and published by Sony Computer Entertainment for the PlayStation 3, PlayStation Portable and PlayStation Vita video game consoles. The series takes place in an alternate history around the year 1950, in which an alien civilization known as the Chimera have invaded and conquered Earth, expanding their armies by capturing humans and transforming them into monster-like supersoldiers to fight for them. The player takes the role of one of the remaining human armed forces as they fight against the Chimera invasion. The series is noted for its use of both conventional and futuristic weaponry, reflecting Insomniac's previous work on the Ratchet & Clank series. All games in the series have all been rated M by the ESRB. The characters and related events are described, below, using in-universe tone, so the fictional alien invasion during 1951 is treated as fact, rather than fiction.