One Must Fall: Battlegrounds is the sequel to One Must Fall: 2097. It is set several years after the original, and continues the story of giant robots fighting each other. One Must Fall is a fully 3-dimensional fighter. Characters have the freedom to run about the arenas as they please. Rather than following a side scrolling view camera, One Must Fall uses a 3rd person chase cam to observe the action in order to adjust to it's full range of motion. Players choose which HAR (Human Assisted Robot) they wish to use, as well as a pilot to control it. Each pilot has different stats which affect how strong, fast, focused, or how much damage each robot can take. This, combined with the different attacks for each HAR, make up most of the variety in the game. One Must Fall: Battlegrounds also has a unique combo system that allows for a large variety of moves to be strung together. The game also incorporates "hazards" into the arenas, such as fireball launchers, electrically charged walls, and minefields.