David Chart's Roleplaying Pages

These web pages are concerned with tabletop roleplaying, one of my hobbies. I have also published some books for a few roleplaying games.
Open Game Content
Material for a game I'm not allowed to name here, but it's very famous and in its third edition.
Ars Magica
Material for Ars Magica, the roleplaying game of medieval magic. I am currently the Line Editor for this game, but the material on these pages is completely unofficial.
DCS, my freeware RPG engine. It doesn't actually have a game to go with it yet, but it does have all the rules. Note that this is a tabletop RPG, not a computer game.