Might and Magic Book One: The Secret of the Inner Sanctum (variously abbreviated to Might and Magic, Might and Magic I) is a role-playing game, the first title created and published by Jon Van Caneghem and New World Computing. Initially released for the Apple II in 1986. It is the first installment in the series. The premise of the game involves six adventurers embarking on a quest to locate the Inner Sanctum of the land of Varn, ending the reign of Sheltem, a tyrannical usurper, in the process. Its direct sequel is Might and Magic II: Gates to Another World.