Portal with RTX

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Portal with RTX is a unofficial remastered version of Portal developed by Nvidia Lightspeed Studios, which takes advantage of newer hardware and adds raytracing support, PBR textures, new high-poly models and much more.

It was released for free on December 8, 2022, for anyone who owns Portal on Steam. The game was developed using the RTX Remix tools, and runs on Vulkan hooked on top of DirectX 8 feature level.

It is only optimized for system with Nvidia GeForce RTX graphic cards. Users with AMD graphics card (including Steam Deck, which uses  AMD RDNA 2 like most 9th gen consoles) may suffer from performance issues, when trying to run this game even with high-end card.

Portal RTX received mixed reviews at launch due to various reasons like the performance issues affecting some NVIDIA cards (and unplayable on systems with AMD Radeon), and the art-style & lighting seems out of place (which itself was based off Portal 2 instead of Portal 1 which looked more dirty).

Via Portal with RTX you can use RTX remix with Half life 2 via loading the map files, a tutorial can be found

System Requirements

Last updated: June 20, 2023

Minimum:	Recommended:	Ultra (optional):
Processor: Intel i7-6700, AMD Ryzen 5 3600 Graphics: NVIDIA GeForce RTX 3060 Memory: 16 GB RAM Storage: 25 GB or more, HDD Windows: Windows 10, 11 or later Mac: N/A Linux: N/A (may run with Proton) Other: Vulkan supported GPU required	Processor: Same as Minimum Graphics: NVIDIA GeForce RTX 3080 Memory: 16 GB RAM Storage: 25 GB or more, SSD Windows: Same as Minimum Mac: N/A Linux: N/A Other: N/A	Processor: Intel Core i7-12700K, AMD Ryzen 9 5900 Graphics: NVIDIA GeForce RTX 4080 or higher Memory: 32 GB RAM Storage: 25 GB or more, SSD Windows: Same as Minimum/Recommended Mac: N/A Linux: N/A Other: N/A

Note:This game is not optimized for systems with AMD graphics card, which means that Portal with RTX will usually perform worse when not using a Nvidia GPU.
System requirements may change over time depending how updates affect them.