A Role-Playing Game, or RPG, is a type of game where several people gather to tell a story through characters of their own creation.
Rules regulate who gets their way whenever conflict in the story arises.
RPG rules help determine if the bad guy was shot or not. Different Role-Playing Games use different rules systems for resolving conflicts. Fuzion is the name of one of those systems. Interlock by R. Talsorian Games, and the HERO System by HERO Games. For gamers familiar with Interlock, there won't be many suprises and they should feel right at home.