Street Fighter × Tekken

Street Fighter X Tekken is an upcoming fighting game in development by Capcom, scheduled for release on PlayStation 3 and Xbox 360.

Trailer
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Gameplay
The game will use the 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".

Characters confirmed thus far:

Street Fighter
 * Ryu
 * Chun-Li
 * Dan

Tekken
 * Kazuya Mishima
 * Nina Williams