The protagonist, who's name was supposedly 'Buster', was described as a reluctant hero. The setting of the game took place in a 70s retro-futuristic setting where Earth had been destroyed, and the remnants of humanity built civilizations and cities on the chunks of rocks left over. The game featured a dynamic pedestrian/crowd AI system that dynamically reacted to the player's actions, where if the player were to sprint through the crowd with a gun, the crowd would react with frantic behavior. This is similar to another Ubisoft franchise, the Assassin's Creed series.