The Year of Living Free is my wiki for gratis and libre games (although it ended up collecting a bunch of semi-libre and pseudo-libre games along the way). The current count is 252, the vast majority of which are role-playing games (to some extent, this reflects my personal interest -- but I think it also shows the currency open gaming has thanks to Wizards of the Coast and the OGL). I would recommend it to anyone interested in open gaming (or in getting free stuff -- most of the games are gratis).
Thanks for sharing that!
