A friend of mine, Dark Bunny Lord is running a guild called Grace, Rise of the Supers. It's a guild based around a d20 rpg. Currently, the guild is attempting to recover from a bit of deadness, so it could use a bit of help regaining its lost glory. Anyone here who is interested in forum-based rpg's should check it out. It's a bit complicated of a system, but it's really in-depth and gives a wide range of customization options for your character.
In the meantime, I'll be continuing work on the long-overdue BESM system.
