CD Projekt RED started developing its next-gen RED Engine tech in 2015

CD Projekt RED started developing its new fourth-gen RED Engine tech as far back as 2015, but major innovations happened in 2017.

Every CD Projekt Red Game In Development - IGN

The Witcher: How CD Projekt Red Created One of the Biggest Names in Gaming - IGN

CD Projekt Red Confirms a New Witcher Game Is In Development, Will Use Unreal Engine 5 - IGN

History - CD PROJEKT

The Witcher: How CD Projekt Red Created One of the Biggest Names in Gaming - IGN

Toyota 86 - Wikipedia

Witcher 3: Wild Hunt Complete Edition - PlayStation 4 Complete Edition : Whv Games: Everything Else

CD Projekt - Wikipedia

History - CD PROJEKT

The Witcher 4: New trilogy, narrative details and everything else we know - Dexerto

CD Projekt Red outlines major changes after Cyberpunk 2077 disaster; promises better marketing

Nintendo's Origins: The Complete History and Strategy

CD Projekt Red Announces a Remake of The Witcher in Unreal Engine 5 - IGN