From publisher blurb:
The Hero System is a truly universal roleplaying system. With these rules and your imagination, you can play Viking warriors, high-tech star pilots, and everything in between. The Hero System encourages you to play heroes: those mighty individuals who change the world. Stop playing some first-level loser, and stop changing game systems each time you want to play a different campaign. With the Hero system, on game is all you'll ever need!