Derby Stallion 64 (Beta) is a horse racing simulation game developed and published by Media Factory, exclusively for the Nintendo 64 platform. As part of the *Derby Stallion* series, it retains the franchise’s classic gameplay: players take on the role of a horse ranch owner, managing all aspects of horse breeding, training, and competition. Starting with limited funds, players select suitable stallions and mares to breed and raise promising racehorses. Through scientific training and strategic race scheduling, they improve their horses’ stats to achieve top results in various events, earning prize money and prestige. The game uses the latest horse racing data from its era, authentically recreating racing scenarios and rules. For fans of horse racing and simulation management games, *Derby Stallion 64 (Beta)* offers an immersive deep dive into the world of horse racing.