Capcom vs. SNK 2 EO is a fighting game released for GameCube, featuring an Easy Operation system that simplifies controls, allowing players to execute special moves using the right analog stick. This version includes four additional characters: Evil Ryu, Orochi Iori, Shin Akuma, and Ultimate Rugal. Players can choose from various gameplay Grooves, with GC-ism tailored for the GameCube controller, while the Roll Cancel glitch from earlier versions has been removed.
Capcom vs. SNK 2 EO is the same game but with minor changes in gameplay and the inclusion of an EO (`Easy Operation`) system that allows the player to perform specific attacks by simply moving the right analog stick in a certain direction. Like all other home versions of the game, CvS2: EO also contains four bonus characters: Evil Ryu, Orochi Iori, Shin Akuma (Shin Gouki in Japan), and Ultimate Rugal (God Rugal in Japan), powered-up versions of four regular characters.
Before selecting a team, the game offers a selection of `Grooves`, which change the way the game is played, as well as `AC-ism` or `GC-ism` Grooves; GC-ism simplifies the control scheme, originally designed for the GameCube gamepad. In the Xbox version it is called EO-ism. Capcom vs. SNK 2 EO also removed the Roll Cancel glitch that was in the original versions. In addition, the Xbox version of CvS2: EO also included online play for up to two players on Xbox Live as well as progressive-scan (480p) support, which was noticeably absent in the PlayStation 2 version.