As part of The Witcher's sixth anniversary, series developer, CD Projekt RED announced this morning that to date the series has sold six million copies worldwide.

"Since the very beginning of our journey we have seen that the approach of inviting gamers into a dialogue with the developer is really important and can shake up the - sometimes self-destructive - business side of games," said CD Projekt RED head Adam Badowski. "We hope you'll stay with us for the years to come and that we will continue to make these changes together."

The Witcher series, which includes the The Witcher and The Witcher 2: Assassins of Kings continues to be on the rise. The window between sales of a million units is getting smaller and the next installment of the series, The Witcher 3: Wild Hunt, is scheduled to go monster hunting next year.