FINAL KNIGHT is a D&D style beat'em up action game that brings retro gameplay to the forefront. Players engage in party battles with four characters, strategizing to create synergy in an auto-battler format. The game introduces a unique feature of part destruction, where players dismantle pattern-based bosses to collect materials for crafting equipment.

Character customization plays a significant role in FINAL KNIGHT, allowing players to personalize their characters with various helmets and weapons. With nine basic classes available, each character's background and class influence synergies. Players can switch between controlling the main character and directing the movement and attacks of other party members, enhancing strategic depth.