The HERO System 6th Edition contains all of the rules you need to create any sort of character, power, gadget, vehicle, monster, or weapon you can think of. The HERO System Advanced Player's Guide expanded on those rules, offering more information and options for dedicated HERO System gamers. But if even that's not enough for you, The HERO System Advanced Player's Guide II contains even more new rules, optional and variant rules, and rules expansions for your Hero System games!