K-1 Grand Prix is a single-player action fighting game in which players engage in kickboxing matches against AI opponents or create their own fighters to compete in various modes. In this game, players take on the role of professional kickboxers in a realistic setting, aiming to rise through the ranks from the bottom to the championship by winning tournaments and progressing through a career mode. It stands out with its detailed training system, allowing players to improve their fighters' skills between bouts, and offers a roster of 16 real-world kickboxing legends, along with the option to customize fighters, providing a personalized experience.