Wikipedia
QAGS
QAGS (Quick Ass Game System) is a generic role-playing game system for use in freeform role-playing games. QAGS is not tied to any particular genre or setting, and has been used to run everything from paranormal teenagers to post-apocalyptic super-heroes to fantasy sailing adventure to gun-toting monster hunters to "hard-core" luchadore action to Regency romance to 80’s cartoons to Shakespeare meets Tarantino.