From publisher blurb:
Races Unlocked! Kobolds introduces a new player character race to your Castles & Crusades game: kobolds. Now you can skip the standard racial fare and play something different! Be a small, fierce kobold instead of a bland human or dour dwarf. Additionally, the pdf includes the optional ability to trade out standard racial abilities, allowing you to make your kobold more suitable to what you want to play. Options include: daywalker, biter, breather, glider, opportunits, and tail slapper.