Hearthstone, Dota 2 can't compete with League of Legends in terms of player spending

Last year, no online PC games surpassed $1 billion in microtransaction revenues. This year, it looks like a handful might reach that milestone.

League of Legends has racked up $946 million in in-game spending revenues since the beginning of the year. Industry-intelligence firm SuperData Research published a breakdown of the 10 highest-grossing online PC games in terms of player spending from January through September. Unsurprisingly, developer Riot Games’ megapopular multiplayer online arena battler is the top game of the year so far. And it’s on pace, along with a few others, to bring in more than $1 billion.