Exhumed Obscura

From the Back of the Book:

Exhumed from the dark reaches of the deepest dungeons comes this new expansion for "old school" fantasy role-playing systems. Nine new races, twelve classes, four new stats, critical hit charts, a mass-combat system, numerous spells, weapons and magic items are bound within to augment and enhance your role-playing experience. Players and Game Masters alike will discover new depths to their game worlds as they uncover what has been, until now, obscured.