The Game Master (Japanese: コナミのゲームを10倍楽しむカートリッジ Hepburn: Konami no Gēmu o Jū-bai Tanoshimu Kātorijji, lit. "The Cartridge That Makes Konami Games Ten Times More Enjoyable") is a utility cartridge released by Konami on December 12, 1985. It is meant to be used in conjunction with Konami's own MSX game cartridges, allowing users to select their stages, adjust the number of lives, save progress and high scores, make screen dumps, and play in slow motion, among other uses.