The Witcher 4: Unreal Engine 5.6 and RTX Mega Geometry

Published on March 11, 2026 | Translated from Spanish

CD Projekt Red has confirmed that The Witcher 4, starring an adult Ciri, will be developed with Unreal Engine 5.6 and will feature Nvidia's RTX Mega Geometry technology. This collaboration, active since the start of the project, marks a crucial technical shift for the saga. The goal is clear: leverage UE5.6's capabilities for open worlds and Nvidia's ray tracing optimization to create the densest and most complex setting in the series to date.

Adult Ciri observes a dense forest illuminated by sun rays, showing extreme geometric details and complex vegetation.

The technical synergy: UE5.6 and ray tracing acceleration 🚀

The choice of Unreal Engine 5.6 is not casual. This version of the engine is specifically optimized for managing extensive worlds and efficiently handling complex geometry and ray tracing. This is where RTX Mega Geometry acts as a force multiplier. Nvidia's technology accelerates the construction of the data structures necessary for ray tracing in scenes with enormous polygon density. The result for developers is a more efficient workflow, allowing for more geometric detail without catastrophic performance penalties, which translates into richer and more believable environments for the player.

A new benchmark for open-world AAA games âš¡

CD Projekt Red's bet sets a technical precedent. The combination of an engine like UE5.6, which is constantly evolving, with specific hardware solutions like RTX Mega Geometry, indicates a path where geometric complexity and ray-traced lighting cease to be a burden and become foundational elements of design. This not only benefits The Witcher 4 but pushes the industry toward adopting pipelines that integrate these technologies from pre-production, raising the bar for visual and immersion standards in open-world RPGs.

How will the implementation of RTX Mega Geometry in Unreal Engine 5.6 affect level design and environmental storytelling in The Witcher 4's open world?

(P.S.: game jams are like weddings: everyone happy, no one sleeps, and you end up crying)