Shōryū-ken

Street Fighter, commonly abbreviated as SF, is a Japanese fighting game in which the players pit the video games' competitive fighters from around the world, each with his or her own special moves, against one another. Capcom released the first game in the series in August 1987.

Street Fighter made its debut in the arcades in 1987. It was designed by Takashi Nishiyama and Hiroshi Matsumoto. The player took control of martial artist Ryu, who competed in a worldwide martial arts tournament, spanning five countries and ten opponents. A second player could join in at any time and take control of Ryu's rival, Ken.

Street Fighter II series

Street Fighter II: The World Warrior, released in 1991, was the first true sequel to the original Street Fighter, following an unsuccessful attempt to brand the 1989 fighting action game Final Fight as a Street Fighter sequel, and an officially commissioned spin-off Human Killing Machine on the ZX Spectrum and other home computers. It was one of the earliest arcade games for Capcom's CP System hardware and was designed by Akira Nishitani (Nin-Nin) and Akira Yasuda (Akiman), who were previously responsible for Final Fight and Forgotten Worlds. The release of the game had an unexpected impact on gaming and was the beginning of a massive phenomenon.

Street Fighter II was the first one-on-one fighting game to give players a choice from a variety of player characters with different moves, an option which created hitherto unknown levels of depth and replay value for an arcade game. Each player character had a fighting style with approximately 30 or more moves (including previously nonexistent grappling moves such as throws) as well as two or three special attacks per character.

Street Fighter Alpha series

The interquel Street Fighter Alpha: Warriors' Dreams (Street Fighter Zero in Japan and Asia) became the next game in the series. The game used the same art style Capcom previously employed in Darkstalkers and X-Men: Children of the Atom, with settings and character designs heavily influenced by Street Fighter II: The Animated Movie. Alpha expands on the Super Combo system from Super Turbo, by extending Super Combo meter into three levels (allowing for more powerful super combos), and also introduces Alpha Counters and Chain Combos (also from Darkstalkers). The plot of Alpha is set between the first two Street Fighter games and fleshes out the back stories and grudge matches held by many of the classic SF2 characters.[9] It features a playable roster of ten immediately playable characters (and three unlockable fighters), comprising not only younger versions of established Street Fighter II, but also characters from the original Street Fighter and Final Fight. The cast of Alpha consisted of returning characters Ryu, Ken, Chun-Li, Sagat, Bison, Birdie, Akuma and Adon. New characters Charlie, Guy, Rose, Dan, and Sodom join the cast.

Street Fighter EX series

In 1996, Capcom co-produced with Arika (a company founded by former Street Fighter II planner Akira Nishitani) a 3D fighting game spinoff of the series titled Street Fighter EX, developed for the PlayStation-based ZN-1 hardware. EX combined the established Street Fighter cast with original characters created and owned by Arika. It was followed by upgraded version titled Street Fighter EX Plus in 1997, which expanded the character roster. A home version with further additional characters and features, Street Fighter EX Plus Alpha, was released for the PlayStation during the same year. The cast consists of Ryu, Ken, Chun-Li, Akuma, Guile, Dhalsim, Zangief, Sakura, Kairi, Allen, Blair, Hokuto, Skullomania, Garuda, Evil Ryu, Bison, D. Dark, Pullum, Darun, and C. Jack.

Street Fighter 3 series

Street Fighter III: The New Generation, made its debut in the arcades on the CPS3 hardware in 1997.Street Fighter III discarded the character roster from previous games (only Ryu and Ken returned),introducing several new characters in their place, most notably the grappler Alex, who was designed to be the new lead character of the game, and Gill, who replaced Bison as the game's main antagonist. Street Fighter III introduced the "Super Arts" selection system and the ability to parry an opponent's attack. The cast consisted of Ryu, Ken, the wrestler Alex, Sean (Ken's apprentice), gentlemen boxer Dudley, kung fu fighting twins Yun and Yang, stretchy limbed Necro, ninja girl Ibuki, one armed Oro, and Elena from the previously unrepresented Africa.

Street Fighter 4

Street Fighter IV is a 2009 fighting game produced by Capcom. It is the first numbered Street Fighter game released by Capcom for the arcades since 1999. The coin-operated arcade game was released in Japan on July 18, 2008, with North American arcades importing the machines by August. The console versions for the PlayStation 3 and Xbox 360 were released in Japan on February 12, 2009, and were sold in North American stores as early as February 16, with a February 18 intended release date. The official European release was on February 20.A Windows version was released on July 2, 2009 in Japan, July 3, 2009 in Europe and July 7, 2009 in the US. As of March 31, 2009, Street Fighter IV had sold over 2.5 million copies worldwide. An updated version, Super Street Fighter IV, is scheduled to be released as a standalone title in Spring 2010