Square Enix Square Enix Holdings Co . , Ltd . is a producer of video games and manga . Square Enix is best known for its computer role - playing game franchises , which include the " Final Fantasy " series and the " Dragon Quest " series ( previously known as " Dragon Warrior " in North America ) . Square Enix was formed as the result of a merger between Square Co . , Ltd . and that took effect in 2003 . Enix officially absorbed Square , with Square stockholders receiving only 0 . 81 shares of stock in the new company compared to Enix stockholders receiving a one - to - one trade . Despite this , many top officials within Square assumed leadership roles in the new corporate hierarchy , including Square president Yoichi Wada , who was appointed president of the new corporation . Square Enix has regional operations , including Square Enix , Inc . ( for all of North America , with headquarters in El Segundo , California , United States ) and Square Enix Europe Ltd . ( for Europe , Australia , and other PAL standard areas , with headquarters in London , England ) , which act as localization departments . On August 22 , 2005 , Square Enix announced their acquisition of Taito Corporation , renowned for their arcade hits , " Space Invaders " and the " Bubble Bobble " series . By September 2005 , Square Enix had wholly acquired Taito . On April 22nd , 2009 , Square Enix acquired Eidos plc in a takeover deal worth £84 . 3 million ( 32p per share ) . Eidos plc is the holding company for Eidos Interactive , the UK - based publisher of the Tomb Raider and Hitman franchises . Eidos plc was renamed and merged with Square Enix Ltd . ( Square Enix ' s original European division ) and is now known as Square Enix Europe . Properties . Computer and video games . By far , Square Enix ' s video gaming properties are its most valued assets . Square Enix ' s " Dragon Quest " franchise , which originally belonged to Enix before the merger , is considered the most popular game series in Japan , and each new installment of the series routinely breaks Japanese sales records . The " Dragon Quest " franchise has sold over 60 million units worldwide to date , with about 90 % of it from Japan , making it the most popular franchise domestically in Japan , but not very popular abroad . Internationally , however , the " Final Fantasy " franchise has been considered Square Enix ' s most important asset , and is the best selling Square Enix ( or Square Soft ) franchise worldwide , selling over 100 million units to date . More recently , Square Enix ' s " Kingdom Hearts " series ( developed in collaboration with Disney ' s Buena Vista Games ) has become massively popular worldwide , adding another valuable asset to the company . Film . " " is a CGI - animation movie based on Squaresoft ' s successful PlayStation game " Final Fantasy VII " which is set two years after the events of the game . Previously , before Square merged with Enix , Square released another " Final Fantasy " movie , " " , which managed to single - handedly bankrupt Square Pictures . Manga . The company also has a manga publishing division in Japan ( from Enix ) called Gangan Comics . It publishes manga for the Japanese market only . It also publishes a popular Japanese manga anthology called " Monthly Shonen Gangan " . Titles published by Gangan Comics include " Papua " , " Spiral " , and " Fullmetal Alchemist " . Also contains manga adaptations of diverse Enix , and later Square Enix games , like " Kingdom Hearts " . " Fullmetal Alchemist " was licensed for release in North America by Viz Media , while " Kingdom Hearts " and " Spiral " were licensed by Tokyopop .