Ultima Online (UO) is a massively multiplayer online role-playing game (MMPORG) credited with popularizing the genre. Though there were games prior to UO that allowed hundreds of people to play at the same time, this MMPORG introduced simultaneous play by thousands of players worldwide through various servers called “shards.” More than 1 million paid accounts have been created since the game launched in 1997. In July 2003, at the peak of its popularity, UO had how many subscribers? Discuss
Source: The Free Dictionary