Street Fighter x Tekken is likely a four-player game after its producer teased the feature.
SFxT features a real-time tag battle system that allows players to fight as a team of two and switch between characters by simultaneously pressing medium punch and medium kick.
Rival fighting game Mortal Kombat, out this week, is also two-on-two, but allows up to four players to play in a match, each controlling a single character.
When Eurogamer asked Street Fighter producer Yoshinori Ono if Street Fighter x Tekken also includes four-player fighting, he replied: "Just look at my face and imagine. I'm sending you psychic signals.
"Eventually I'll have to answer that question."
Capcom has announced 10 characters so far, including Ryu, Ken, Kazuya and Nina Williams.
The game system is based on the 2.5D Street Fighter IV, with eight way movement and 3D characters battling on a 2D plane.
Tekken characters have been reworked so they play on the 2D plane with six attack buttons, although they can still be played with the traditional Tekken four button system.