Derby Stallion 64 is a horse racing simulation game released by Media Factory for the Nintendo 64 in 1999. As the first 3D entry in the Derby Stallion series, it offers rich horse breeding and racing experiences. Players take on the role of both owner and trainer, selecting, raising, and training horses to compete in various events for championship titles. The game features multiple tracks and race types that test players' strategy and skill. Through careful horse development and tactical planning, players can experience the thrill and challenge of horse racing.