The original three games and their updates, Mortal Kombat (1992), Mortal Kombat II (1993), Mortal Kombat 3 (1995), Ultimate Mortal Kombat 3 (1995), and Mortal Kombat Trilogy (1996), are 2D fighting games. The arcade cabinet versions of the first two used a joystick and five buttons: high punch, low punch, high kick, low kick, and block; Mortal Kombat 3 and its updates added a sixth "run" button.[1] Characters in the early Mortal Kombat games play virtually identically to one another, with the only major differences being their special moves.[2] Through the 1990s, the developer and publisher Midway Games kept their single-styled fighting moves with four attack buttons for a different array of punches, kicks and blocks. Mortal Kombat 4 was the first Mortal Kombat game in which the characters could move in three dimensions and the first to use 3D computer graphics. From Deadly Alliance to Mortal Kombat: Deception, characters had three fighting styles per character: two unarmed styles, and one weapon style.[3] While most of the styles used in the series are based on real martial arts, some are fictitious.[4] Goro's fighting styles, for example, are designed to take advantage of the fact that he has four arms. For Armageddon, fighting styles were reduced to a maximum of two per character (generally one hand-to-hand combat style and one weapon style) due to the sheer number of playable characters.[5] Mortal Kombat vs. DC Universe dropped multiple fighting styles for most characters in favor of giving each character a wider variety of special moves[6][7] 2011's Mortal Kombat returned to a single 2D fighting plane, although characters are rendered in 3D;[8] unlike previous Mortal Kombat games, each of the controller's four attack buttons corresponds to one of the character's limbs, the buttons thus becoming front punch, back punch, front kick and back kick ("front" indicates the limb that is closer to the opponent, and "back" indicates the limb that is farther away from the opponent).