Sorcerer
By Adept Press / Ron Edwards
http://adept-press.com/games-fantasy-horror/sorcerer/
I really like this game. However I've yet to play in a game of it that successfully got off the ground and going. To include my own (more than once) attempts at doing so.
I would really like to break the trend and play in a successful game of this if anyone has the wherewithal to do so.