From Wikipedia
Tekken 2 is the second installment in the popular Tekken fighting game series. It was first released in arcades in 1995, and later released for the PlayStation in 1996. It was re-released in Tekken 5 's Arcade History mode for the PlayStation 2, in 2007 for the PlayStation 3 and PlayStation Portable via the PlayStation Network, and in 2009 for Zeebo via ZeeboNet...
The gameplay in Tekken 2 is much like its predecessor, with a few additions. It continues to use 2D backgrounds in its stages, features an infinite playing field, and uses a fighting system that utilizes four buttons: left punch, right punch, left kick, and right kick. Distinct additions included attack reversals for some characters, back throws, chain-throws, and a sidestep unique to one character, Kazuya Mishima. Tackles were also modified to inflict damage when running from a greater distance. Each time the game is beaten with one of the default available characters in arcade mode, the associated sub-boss character becomes selectable.