About Portal™ with RTX

Portal with RTX is a free DLC available to every Portal owner, developed by NVIDIA Lightspeed Studios to reimagine the critically acclaimed original through the lens of ray tracing. Every frame of gameplay receives an upgrade, pairing stunning full ray tracing with hand-crafted, physically based high-resolution textures and enhanced high-poly models that evoke the originals, all presented in striking 4K. It's a technical reinvention of a landmark action game, built to show what modern rendering can bring to a familiar experience.

The transformation runs deeper than surface polish. Full ray tracing reshapes each level by letting light bounce off the scene's geometry and materials, so every light source is ray-traced and casts shadows, global illumination naturally brightens and darkens rooms, and volumetric lighting scatters through fog and smoke to produce pixel-perfect results. Because it's designed to run on any ray-tracing capable GPU, Portal with RTX gives a wide range of PC players the chance to revisit an award-winning classic rendered with cutting-edge lighting. For anyone curious about how far real-time graphics have come, it stands as both a nostalgic return and a vivid demonstration.