I run the Five Gems campaign, where ponies, griffons, and changlings search for five mystical gems to unlock the vault to the mighty Crown of the Griffon King.
IC thread
OOC thread
If you like DC, Marvel, and Worm, check out Invincible, wherein Emma Barnes triggers with the Kryptonian package.
If you enjoy Self-Inserts, Worm, and/or Mistborn, check out Preservation.