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As Unreal Fest 2025 kicked off, CD Project RED joined Epic Games on stage to present a tech demo of The Witcher 4 in Unreal Engine 5 (UE5). Presented in typical CDPR style, the tech demo follows the main protagonist Ciri in the midst of a monster contract and shows off some of the innovative UE5 technology and features that will power the game’s open world.

The tech demo takes place in the region of Kovir — which will make its very first appearance in the video game series in The Witcher 4. The presentation followed main protagonist Ciri — along with her horse Kelpie — as she made her way through the rugged mountains and dense forests of Kovir to the bustling port town of Valdrest.

The demo, which runs on a PlayStation 5 at 60 frames per second, shows off in-engine capabilities set in the world of The Witcher 4, including the new Unreal Animation Framework, Nanite Foliage rendering, MetaHuman technology with Mass AI crowd scaling, and more. The tools showcased are being developed, tested, and eventually released to all UE developers, starting with today’s Unreal Engine 5.6 release. This will help other studios create believable and immersive open-world environments that deliver performance at 60 FPS without compromising on quality — even at vast scales.

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