PC Gamer had the opportunity to interview Gabe Amatangelo, the director of Cyberpunk 2077, about the upcoming game code-named Orion, or simply Cyberpunk 2 (not the official name yet). It has been confirmed that the game has switched from CD Projekt Red’s own engine, REDengine (which has been used since The Witcher 2), to Unreal Engine 5.
CD Projekt Red has been gradually shifting away from REDengine for some time now, starting with the new installment of The Witcher (Polaris) and The Witcher 1 Remake (Canis Majoris). This means that the company no longer has any new games using REDengine. They have switched to using UE5 exclusively.
The reason for the engine switch is likely to reduce the burden of engine maintenance, minimizing the chances of bugs that need fixing, and ultimately improving the efficiency of game development.
Amatangelo revealed that the CDPR team has collaborated with Epic Games to incorporate certain features of REDengine into UE5.
TLDR: Gabe Amatangelo, director of Cyberpunk 2077, confirmed that the upcoming game code-named Orion (or Cyberpunk 2) has switched from CD Projekt Red’s REDengine to Unreal Engine 5. This transition aims to ease engine maintenance, reduce bugs, and enhance development efficiency. The collaboration with Epic Games has allowed certain features of REDengine to be integrated into UE5.