he long awaited dream match-up between the two leaders in the fighting genre becomes a reality. Street Fighter X Tekken delivers the ultimate tag team match up featuring iconic characters from each franchise, and one of the most robust character line ups in fighting game history. With the addition of new gameplay mechanics, the acclaimed fighting engine from Street Fighter IV has been refined to suit the needs of both Street Fighter and Tekken players alike. Street Fighter X Tekken also sees the introduction of the innovative Gem system, a strategic new way to customize and enhance the fighting experience.he long awaited dream match-up between the two leaders in the fighting genre becomes a reality. Street Fighter X Tekken delivers the ultimate tag team match up featuring iconic characters from each franchise, and one of the most robust character line ups in fighting game history. With the addition of new gameplay mechanics, the acclaimed fighting engine from Street Fighter IV has been refined to suit the needs of both Street Fighter and Tekken players alike. Street Fighter X Tekken also sees the introduction of the innovative Gem system, a strategic new way to customize and enhance the fighting experience.