GameSpot may receive revenue from affiliate and advertising partnerships for sharing this content and from purchases through links.

Portal With RTX Adds Ray Tracing And 4K Textures To Valve's Classic Puzzle Game

This version of the game will be released for free as DLC in November.


If you were looking for an excuse to replay Valve's classic first-person puzzle game, Portal with RTX might be a good one.

Portal is coming up to 15 years old now, so it will obviously show its age a bit in places. As part of yesterday's (September 20) reveal of the Nvidia RTX 40 series, Portal with RTX was announced, which is just the same game, but with some pretty impressive-looking lighting.

Please use a html5 video capable browser to watch videos.
This video has an invalid file format.
Sorry, but you can't access this content!
Please enter your date of birth to view this video

By clicking 'enter', you agree to GameSpot's
Terms of Use and Privacy Policy

Now Playing: Portal with RTX Reveal Trailer

The reveal trailer kicks off with a theme that many a Portal fan will likely find familiar, and a ball of light to show off the newly added ray tracing you'll be able to find in this version of the game. Portal with RTX also utilizes the also-just-revealed DLSS 3, which essentially uses some AI technology to improve the game's frame rate. Though it should be noted this new version of Nvidia's DLSS technology will only work on its new GPUs.

Outside of added ray tracing and the DLSS technology, newly made hi-res "physically based textures, and new, enhanced high-poly models evocative of the originals," have been added, all in 4K, according to the game's Steam page. Portal with RTX is planned for release as a free piece of DLC for all Portal owners, currently set to arrive in November.

The tool used to make Portal with RTX, Nvidia RTX Remix, is also planned to be released for free, which can apparently "add ray tracing with just a few clicks, and gives modders the tools to make ambitious remasters, even for games that were previously unmoddable."

Got a news tip or want to contact us directly? Email

Join the conversation
There are 6 comments about this story