https://www.gamespot.com/articles/pc-launch-helps-monster-hunter-world-pass-10-milli/1100-6461254/

Monster Hunter World has now shipped more than 10 million units, including digitally delivered units. The new sales milestone comes shortly after the game's release on PC in early August. This is up from the 7.9 million unit shipment tally that Capcom announced in May.

Capcom also confirmed that the entire Monster Hunter franchise has now sold more than 50 million combined units as of August 20. The franchise debuted in 2004.