 "D&D" supplements "Eldritch Wizardry" and "Gods, Demi-gods & Heroes" were released in 1976, and the original "D&D Basic Set" was released in 1977.Also in 1977, TSR Hobbies published the original "Monster Manual", the first hardbound book ever published by a game company, and the first product in the "Advanced Dungeons & Dragons" ("AD&D") line.The next year, the "Player's Handbook" was published, followed by a series of six adventure modules that had previously only been used in tournaments.