According to Wikipedia [1] the top selling PC game is Minecraft, with 24 millions sold, followed by World of Warcraft that got to around 14 million subscribers,

According to Wikipedia [1] the top selling PC game is Minecraft, with 24 millions sold, followed by World of Warcraft that got to around 14 million subscribers, while Diablo III is in third place with 12 million copies sold... Sure, that's still not much compared to 2.5 billion, but that's also 5 times what you said. [1]: https://en.wikipedia.org/wiki/List_of_best-selling_PC_games https://en.wikipedia.org/wiki/List_of_best-selling_PC_games