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Dead or Alive 2 is a 3D fighting game developed by Team Ninja (Company) and released by Tecmo for arcades (using Dreamcast (Platform)-based Sega NAOMI (Concept) hardware) on October 16, 1999.
The second installment of the Dead or Alive (Franchise) series, and the sequel to the original Dead or Alive (Game), Dead or Alive 2 updates the character roster while revamping the way stages work (with stages having a variety of shapes, sizes, and environmental hazards). New to the series include the amnesiac karateka Ein, the French opera singer (and illegitimate daughter of the founder of DOATEC) Helena, and the Italian mercenary Leon (Character).
Arcade versions of the game features the ability for players to choose from multiple game modes prior to choosing their fighter. Along with the standard arcade mode (called "Time Attack"), the game features a dedicated Story mode (which shortens fights for additional cutscenes), and bonus Survival and Tag Battle modes (both of which must be unlocked by the service operator). It is the last arcade game in the series prior to Dead or Alive 5 Ultimate Arcade later in 2013.
The game first received an arcade update (titled Dead or Alive 2 Millenium) exclusively in Japan on January 18, 2000. Along with minor gameplay fixes, this update unlocks Survival and Tag Battle modes from the start and adds additional costumes for Kasumi (Character) and Ayane (Character).
The Millenium version was used as the base for the game's ports, all of which add additional game modes and simpler Hold commands. There are six separate versions of these ports:
Much of the gameplay remains the same as the original Dead or Alive (Game), with two attack buttons (Punch and Kick) and a third "Free" button for timed counter-attacks (or "Offensive Holds").
Like the original, the game makes use of a "Triangle System" where basic attacks are countered by Offensive Holds, which are itself countered by throws, which are itself countered by basic attacks.
Rather than standard rings with exploding "damage zones" at the edges, Dead or Alive 2 features a variety of stages in several shapes and sizes, most of which have either stage hazards (damaging enemies who are knocked into them) and multiple levels (in which characters can be knocked into different parts of the stage).
Also new to the series are multiple game modes that can be chosen in the arcade version, including the traditional Time Attack mode, a dedicated Story Mode (which shortens the fights and adds new cutscenes), a Survival mode, and a Tag Battle mode (a two-on-two mode where players can switch between their fighters instantaneously for combination attacks and combo chains).
The base game includes 12 playable characters and 1 unplayable boss. Characters who did not return were Bayman (Character) and Raidou (Character). Later versions of the game added Bayman as an unlockable character while making the final boss playable (as an unlock). The last Xbox port of the game added a character from Dead or Alive 3 (Game), Hitomi (Character), as a unlockable.