The Elder Scrolls Online is a massively multiplayer online role-playing game (MMORPG) developed by ZeniMax Online Studios and published by Bethesda Softworks. It was originally released for Microsoft Windows and OS X in April 2014. It is a part of The Elder Scrolls series, of which it is the first multiplayer installment. As with other games in The Elder Scrolls franchise, the game is set in the continent of Tamriel and features a storyline indirectly connected with the other games. The Elder Scrolls Online had been in development for seven years before its release in 2014. It initially received mixed reviews, but these improved significantly with the re-release and rebranding as The Elder Scrolls Online: Tamriel Unlimited, with critics praising the changes that were made.