At Activision Blizzard's recent financials call, Bobby Kotick confirmed that Diablo 3 has now passed the 10 million mark in sales.
Kotick claimed that sales have been "record-shattering" since the game's release in May 2012. According to Activision Blizzard's internal data Diablo 3 has been the biggest selling game in the US and Europe, both in terms of units sold and dollars earned.
Activision Blizzard has continued to perform well in what has been a good year for the company as a whole, generating more than $1 billion in cash flow. As a business Activision is in the black with $3.4 billion in cash and investments and zero debt.