The Monster Hunter World Witcher update has been released for both PlayStation 4 and Xbox One which offers a free single player questline featuring Geralt.
Capcom announced the Monster Hunter World/The Witcher crossover event back in December of last year and brings new RPG elements to Monster Hunter World.
“The quest for this collaboration is really unique because it mixes Monster Hunter: World gameplay along with the RPG elements of The Witcher 3: Wild Hunt to create a really fresh experience we think is going to appeal to fans of both series”, Monster Hunter World producer Ryozo Tsujimoto wrote upon the announcement of the event. “You’ll see that coming early in 2019. We couldn’t have done it, of course, without the close collaboration of CD Projekt Red. We’re still working with them right now on the content and I think you’re really going to enjoy it.”
[PS4/XB1] An otherworldly threat arrives in #MHWorld... and we need a different type of hunter: The Witcher! ⚔️
— Monster Hunter (@monsterhunter) February 8, 2019
As said, this single player Monster Hunter World questline featuring Geraltl of Rivia is available now for Xbox One and Playstation 4. The event will also hit PC, but a release date has yet to be announced.