Street Fighter x Tekken in japan is known as Street Fighter crosses Tekken. It is a fighting game that is slated to hit Xbox 360 and PlayStation 3 on March 6th in the United States, and March 9th in Europe. The PC version is slated to be released on May 11th, and the PlayStation Vita is going to release in the fall of 2012.
Street Fighter x Tekken has 38 overall characters. The PlayStation 3 and PlayStation Vita versions has 5 exclusive characters. Each side has 19 characters each:
Capcom’s Street Fighter
The playStation Vita version will release in the fall of this year. Although late, Capcom announced that SFxTekken Vita will add 12 characters to the roster. Capcom also announced that there would be post-launch DLC for consoles, and PlayStation Vita:
PlayStation 3 & PlayStation Vita Exclusive Characters
Mega Man (Capcom)
Pac Man (Namco)