The Unisystem is a tabletop roleplaying game system adaptable to many settings. It uses a typical single GM/many player authority distribution, skill-based character mechanics, and a single d10 mechanic for task resolution. It powers such games as All Flesh Must Be Eaten and Witchcraft.
The Cinematic Unisystem is a variant designed to encourage the more dramatic stories of stage and screen while simplifying play. The Hero Point mechanic allows the players to exercise additional plot authority. The Angel and Buffy the Vampire Slayer RPGs use this system.