Since its release in 2001, "HackMaster" has evolved into a full-fledged role-playing game, spawning over forty add-ons, supplements and game aids. Most notable products include a 32-panel gamemaster's shield, a 16-page character sheet and a 10-volume monster encyclopedia. The "Hacklopedia of Beasts", the "Hackmaster" version of the "Monster Manual", was next released as eight separate volumes. These books were somewhat optional as creature statistics from the 1st and 2nd edition versions of AD&D were compatible with "Hackmaster". K&C later released the "Hackmaster Field Manual", which contained the more popular "Hackmaster" creatures in a single volume.