"Dragon Quest" was not as successful outside Japan, as it was eclipsed by another RPG series, "Final Fantasy". Because of Enix's closure in the mid-1990s, "Dragon Quest V" and "Dragon Quest VI" were not officially released in North America. No games were released in Europe prior to the spin-off "Dragon Quest Monsters". With the merger of Square and Enix in 2003, "Dragon Quest" games were released in numerous markets. In May 2008 Square Enix announced localizations of the Nintendo DS remakes of "Dragon Quest IV", "V", and "VI" for North America and the PAL region, commonly referred to as the "Zenithia" or "Tenku trilogy". With this announcement, all the main "Dragon Quest" games have been released outside Japan. The ninth installment was released in Japan for Nintendo DS on July 11, 2009. The North American version was released on July 11, 2010, while the European version came out on July 23, 2010. The tenth installment of the main series was released for the Wii. Nintendo has been a major publisher outside Japan for the main "Dragon Quest" games, publishing the first "Dragon Quest" game in North America, and published "Dragon Quest IX" worldwide outside Japan; the NDS version of "Dragon Quest VI" is published by Nintendo in North America.