Capcom vs. SNK 2 EO, EO being an acronym for "Extreme Offensive", is a 2003 fighting game for the Nintendo GameCube and Xbox. It is the updated version of Capcom vs. SNK 2. The game's storyline involves large numbers of fighters from around the world and across time coming together to battle for the title of World Champion in a series of 3-on-3 or 1-on-1 battles. During the events, two powerful fighters, Akuma and Rugal, fight each other, and one gains the power of the other, turning into either Shin Akuma or Ultimate Rugal, and battling the player's team or single character.