The Witcher IV has a stunning new trailer! Epic Games showcased a technical demo featuring “some of the cutting-edge tech powering the new Witcher saga” during its annual State of Unreal event on Tuesday. Although the breathtaking visuals were not from the game itself, the presentation gave fans a glimpse into the impressive open-world gameplay, which runs on Unreal Engine 5.6.
Epic Games teases impressive The Witcher IV gameplay, unveils stunning trailer at State of Unreal 2025 | Watch

Epic Games teamed up with CD Projekt for the technical demo, which runs on base PlayStation 5 at 60 frames per second with raytracing. “When we launched Unreal Engine 5 three years ago, CD Projekt Red announced they would collaborate with us to bring large open-world support to the engine,” Epic Games said. “Together at the State of Unreal, we revealed what we’ve been working on.”
The demo also showcases a faster way of loading open worlds via the Fast Geometry Streaming Plugin. The official description of The Witcher IV demo from Epic Games reads: “As Ciri explores the bustling market of Valdrest, we see how 5.6 handles busy scenes full of high-fidelity characters and visual effects like ML Deformer. The tech demo also showcases Nanite Foliage — which provides a fast and memory efficient way to achieve gorgeous foliage density and fidelity, slated for release in UE 5.7,” per IGN.
{{/usCountry}}The demo also showcases a faster way of loading open worlds via the Fast Geometry Streaming Plugin. The official description of The Witcher IV demo from Epic Games reads: “As Ciri explores the bustling market of Valdrest, we see how 5.6 handles busy scenes full of high-fidelity characters and visual effects like ML Deformer. The tech demo also showcases Nanite Foliage — which provides a fast and memory efficient way to achieve gorgeous foliage density and fidelity, slated for release in UE 5.7,” per IGN.
{{/usCountry}}CD Projekt confirmed that Kovir, where Ciri is seen wandering around with her horse Kelpie, will be a playable region in The Witcher IV. The demo proves to be a testament to the endless possibilities of Unreal Engine 5.6's new open-world features. At one point, CD Projekt increased the NPC count to 300 individually animated characters. The presentation also gave a first look at Lan Exeter, a major port city in Kovir and the upcoming region's winter capital.