The story of Derby Stallion '98 takes place in a world where horse racing is a beloved sport. Players take on the role of a horse trainer, tasked with preparing their horses for competition and navigating the challenges of the racing circuit.
Gameplay involves managing the training and care of your horses, as well as making strategic decisions about which races to enter and how to handle injuries or setbacks. The game requires a balance between short-term goals and long-term strategies, as players must balance their desire for quick wins with the need to build a strong team and develop their horses over time.