Bioware's MMO Star Wars: The Old Republic remained one of the biggest MMOs in 2013, according to a report on GamesIndustry. The game was originally subscription based, but later a freemium option was added.
In 2013, the game earned $165 million in revenue worldwide. That number includes subscrptions, sales from expansion packs, as well as microtransactions. This makes it the fourth biggest MMO in terms of revenue.
The biggest MMO in 2013 was World of Warcarft which had revenue of $1,041 million. This is a 36 percent marketshare. Lineage 1 made $253 million, TERA: Online earned $236 million and Lord of the Rings Online $104 million.
The total number of people subscribed to MMO has decreased every year since 2010. In 2010, there were 30.6 million subcsribers to MMOs, while in 2013 it dropped to 23.4 million. The drop in revenue has bee partially offset by more payment tiers and microtransactions. In-game transactions has doubled in the last five years.