Portal prequel mod brings stunning RTX visuals to Valve's classic
A full Portal prequel, detailing the story of GLaDOS and the inner workings of Aperture Science in the lead up to the events of the Valve , has launched on Steam with full ray tracing and Nvidia DLSS 3 support. Originally created in 2008, just after the release of the original , Portal Prelude is a full-length, fan-made campaign, containing 19 new test chambers, whole-new voice-acted characters, and a bespoke origin story for GLaDOS. And now, as a showcase for Nvidia's RTX Remix, it's back and looking better than ever, with totally overhauled visuals and some of the best-looking, well, portals we've ever seen.