NVIDIA RTX Remix Update Introduces New Logic System For Dynamic Graphics Effects

Many classic PC games remain beloved for their unforgettable stories, characters, and gameplay. But as technology advances, their visuals have become dated, making it harder for gamers to appreciate their magic.

NVIDIA RTX Remix, a modding platform for RTX AI PCs, was built to change that. By reimagining the graphics of these timeless classics with cutting-edge path tracing, Remix has empowered fans to relive their favorite adventures in stunning detail, while introducing a new wave of players to the games that defined an era.

Later this month, a new RTX Remix update will be available via the NVIDIA app that adds a powerful logic system, enabling modders to easily trigger dynamic graphics effects throughout a game based on a wide variety of game events.

Introducing NVIDIA RTX Remix Logic

Historically, modifying a game's graphics to respond to real-time game events required source code or engine access. 

Now, Remix’s powerful Logic system allows modders to dynamically transform visuals using 900 Remix graphics settings, based on in-game events in over 165 classic games.

Before RTX Remix Logic, a modder could create a snowy winter day driven by Remix’s path-traced volumetric system, but those same weather conditions would end up being applied to every part of every level, throughout the entire mod.

Before RTX Remix Logic, snow would incorrectly fall indoors

Now, with Logic, modders can set weather and fog conditions to trigger only when the player’s current position is outdoors, allowing for more targeted modifications.

Remix Logic is flexible, with over 30 supported game events, including the player’s camera state, world bounding boxes, any object’s state, the flow of time, and even the keys a player presses.

Logic comes with an easy to learn, no-code, node-based user interface to connect various triggers with over 900 graphical changes. There are millions of possibilities with how this system can be used, and the system is extensible, allowing the community to add more game event triggers and actions over time.

For example, in Half-Life 2 RTX, we can create a door that opens to a multiverse of Ravenholms, each with its own lighting and weather conditions. Each time the door opens, it triggers a new Ravenholm to be rendered.

We can create magical items that transform the world, like this sci-fi device that, when held, makes the wall breathe around you.

Logic knows how close this object is to the player, and can create this awesome effect by animating the displacement of world materials when the device is held.

But Remix Logic isn’t just for eye candy–it can even be used to create new gameplay systems in classic games. Here’s a night vision system we added to Half-Life 2 RTX as a test. It activates whenever the crossbow zooms in, and uses post processes to color grade the image to green and black (credit to modder “xoxor4d” for the idea).

Systems created from Remix Logic can even utilize multiple game events at the same time. Here’s a “paranoia” system that warns the player of danger when hidden enemies are nearby - the game detects when an enemy is near the player, but is outside their view, triggering post effects like chromatic aberration and vignetting to pulse, like a heart beat.

Remix Logic can even allow modders to create bombastic set pieces, like those found in popular AAA games. Here’s an example we made combining traditional Source modding alongside Remix Logic:

As the machine turns on, Remix Logic makes it spew path traced particles that turn increasingly chaotic over time. Lights in the environment start to pulse due to unstable energy, before a bright flash blinds the player and transforms the skies into a nuclear hellscape. Zombies approach the player and begin to disintegrate from the new radioactive conditions.

The Remix Community Soars To New Heights

2025 was a breakthrough year for the Remix community, with over 50 new Remix mods released, and over 20 community tools via open source contributions and plugins now available to help expand compatibility, enhance artist workflows, and improve modder productivity.

Some of our favorite plugins from the year include compatibility wrappers for Unreal Engine 1, Unreal Engine 2, and Unity, plugins for Blender and Adobe Substance, and generative AI models trained by Remix community members, like “PBR Fusion 3”, which specialize in creating game ready materials from low resolution game textures.

Our new Remix Logic update also comes with a brand new look for the Remix Runtime menu from community developer “xoxor4d”. This open source contribution expands how customizable the Remix Runtime’s menu is, adding the ability to resize it, retheme it, and change its transparency. If you’re a developer looking to work alongside us to make RTX Remix better, be sure to contribute to our official RTX Remix GitHub.

NVIDIA Runtime Theme Contributed by xoxor4d

On top of all of the expansions in functionality, there have been some impressive new mods released, including Unreal RTX by mstewart401, and Left 4 Dead 2 RTX by Nostalgia Drive Team, and we got sneak peaks for mods in active development such as, Call of Duty: Black Ops RTX (2010) by skurtyyskirts, and Clive Barker's Undying by @PathtracedParadise.

To play the latest RTX Remix mods, be sure to check out ModDB.

Make Your Own Mods With NVIDIA RTX Remix, Or Download From ModDB

Remix Logic makes each rendering feature into an interactive sandbox of experimentation and expression, and we can’t wait to see what modders create with it when it launches in the next RTX Remix update later this month.

To make your own RTX mods, download NVIDIA RTX Remix from the Home screen of the NVIDIA app. And grab the Half-Life 2 RTX demo and Portal with RTX from Steam for an example of what’s possible with RTX Remix.

To find RTX Remix mods to download and play, we recommend ModDB and the RTX Remix Showcase Discord server.

And for news about future RTX Remix enhancements, new RTX games, RTX technologies, drivers, NVIDIA software, and more, return to GeForce.com regularly.