The world of role-playing games has been expanding outward ever since Dungeons and Dragons was first released. Within five years of the first published system, games which used different fundamental assumptions and mechanics not only existed but had started to find popularity. Within 15 years, games existed which used the medium in a completely different way than D&D ever intended or expected to. Now, over 45 years later, the RPG world is a vast plane of games with GMs, without GMs, games with dice, with cards, with block towers and with no randomizers at all. There are games which exist to simulate worlds, games which exist to be played optimally, and games which trace out the creation of a story scene by scene. It is, as they say, a glorious time to be alive.