Street Fighter × Tekken

Street Fighter X Tekken is an upcoming fighting game in development by Capcom, scheduled for release on PlayStation 3, Xbox 360, PlayStation Vita and PC. The game is one of a pair of games, with the other being Tekken X Street Fighter, in development by Namco.

Gameplay
The game will use a modified Street Fighter IV engine and will include a Versus Mode, a Training Mode, and, "Tag Team combat where players select two fighters to deliver knockout assist attacks and special combos". The KO system works similarly to Tekken Tag Tournament, where the fight ends when one member of the team has been knocked out. A new feature will be the "Pandora" mode, where players can relinquish their partner in order to gain a temporary surge in power. According to trailers, this new mode will tie in to the game's story.

Another new feature will be the gem system, where players can add up to five gems to their character in order to enhance their abilities and stats. Most gems are immediately in effect, though some gems will only take effect when certain conditions are met on the battlefield.

Characters
The below characters are confirmed :

Street Fighter

 * Ryu
 * Ken Masters
 * Chun-Li
 * Guile
 * Abel
 * Cammy White
 * Sagat
 * Dhalsim
 * Poison
 * Hugo Andore
 * Ibuki
 * Rolento F. Schugerg
 * Zangief
 * Rufus

Tekken

 * Kazuya Mishima
 * Nina Williams
 * King
 * Craig Marduk
 * Bob
 * Julia Chang
 * Hwoarang
 * Steve Fox
 * Yoshimitsu
 * Raven
 * Kuma
 * Heihachi Mishima
 * Emile (Lili) de Raochefort

Exclusive

 * Cole MacGrath (PS3/Vita versions)
 * Toro (PS3/Vita versions)
 * Kuro (PS3/Vita versions)

Unconfirmed
Note: While the following characters appear in "teaser" trailers/promotional art/etc., they have yet to be officially confirmed.

Street Fighter
Notes
 * Juri
 * R. Mika
 * Balrog
 * Vega
 * Cody
 * Mike Haggar
 * 1. The teaser for R. Mika contains an image of her costume's ruffles. However, recent developments revealed that it was Kuma wearing her costume. Despite this, the remote possibility exists that she may be confirmed as a playable character, though it is nowhere near certain at this point in time.

Tekken

 * Zafina
 * Asuka Kazama
 * Ling Xiayou
 * Paul Phoenix
 * Marshall Law

Trailers
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