LotFP's role-playing books are supplements and adventures compatible with existing First Edition, Original Edition, and "Basic Edition" fantasy role-playing games, as well as modern "clone" games including Labyrinth Lord™, OSRIC™, and Swords & Wizardry™.

Note that it is not LotFP's goal to recreate the old feeling with their books, either in look or content. Playing these classic games is not an exercise in nostalgia or a longing for a different time - these games are vibrant and alive and continue to provide true gaming excitement today, and on their own terms. LotFP's game offerings treat these games with the respect they deserve while giving their referees and players innovative and fresh material for those games.