Street Fighter IV is a fighting game developed and published by Capcom for the gaming world. It features a mix of characters from previous games, such as Ryu, Ken, Chun-Li, Guile and new characters like Crimson Viper, Abel, El Fuerte and Rufus. The game is rendered in high definition 3D with classic Street Fighter 2D perspective combined with additional 3D camera flourishes. Six-button controls are used to incorporate state of the art online match making and worldwide online gameplay along with special moves such as Focus attacks, Super Combos and Ultra Combo system. Classic Street Fighter II characters have also been recreated for a new generation of gamers together with new brawlers including female super spy Crimson Viper and lucha libre wrestler El Fuerte among others. Online gameplay features include instantaneous online challenges; versus mode; tournament mode; world wide online gameplay to provide players both newcomers and veterans alike some exciting challenges to face off against each other.