The new Logic system utilizes 900 of the graphics settings available in RTX Remix to dynamically transform visuals based on in-game events. The feature will be supported in more than 165 classic games. Nvidia has referred to this as a major step in further modding older titles, since requiring the game to respond to real-time game events would usually necessitate access to the game’s source code or engine.

In one of the provided examples, Nvidia notes that players could set up different weather systems in Half-Life 2, making it snow throughout the level. However, RTX Remix makes it so that it snows regardless of whether the player is indoors or outdoors. With the Logic update, players can set up triggers to ensure that this snow doesn’t start falling from the ceiling when the player is exploring a house. The system is set to support more than 30 game events, including things like the player’s camera state, world bounding boxes, the state of any in-game object, the flow of time in the game, and even a key pressed by the player.

“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,” explained Nvidia.

Along with bringing in better visuals and more dynamic world events, Logic can also be used to create new gameplay systems by making use of multiple game events. Making use of the Half-Life 2 example again, Nvidia showcased a “paranoia” mechanic that adds effects like making the player’s vision blurry to warn them about enemies that might be hiding nearby.

The new Logic features of RTX Remix don’t require programming knowledge to use. Rather, it can be set up and edited through a node-based user interface that doesn’t require the user to write any line of code. This interface can connect to various nodes to set up causes and effects, which can then be tuned to trigger more than 900 graphical changes. The system is also designed to be extensible, which opens up the doors for the RTX Remix community to add their own systems and nodes to the tool, like new game event triggers and actions.

RTX Remix was initially released all the way back in April 2023, and at the time, only supported older PC games that use DirectX 8 or DirectX 9 graphical APIs. Over time, however, Nvidia has slowly expanded the number of games that can be modded through the tool.

Essentially allowing users to easily mod classic PC games, RTX Remix was originally announced back in September 2022. Users can make use of modern day graphical features in older games as long as the older titles make use of DirectX 8 or DirectX 9.

This means that players can try out older games with RTX capabilities, like DLSS, ray-traced lighting, and even more advanced features like volumetric fog and lighting. The software is able to pull this off by making use of complex machine learning algorithms.

Back when it was first unveiled, Nvidia used The Elder Scrolls 3: Morrowind to show off features of RTX Remix, like adding a new lighting system to the game and easily updating its textures.

Alongside RTX Remix, Nvidia had unveiled Portal RTX, which was also developed using RTX Remix.

Without going too much into the science or maths of how it all works, RTX Remix essentially allows players to tinker with various modern graphical settings in games that might even be too old to have supported these settings when they were originally released.

This means that players can now use RTX Remix to add RTX capabilities in their games of choice. This includes ray-traced lighting, DLSS, and even volumetric fog and lighting. The software does this by making use of complex machine learning algorithms.

According to Nvidia, RTX Remix will support games running on DirectX 8 and DirectX 9 games with fixed function graphics pipelines. This means that there will be a list of compatible games; examples shown in the announcement is The Elder Scrolls 3: Morrowind and Mount & Blade.

The just-announced Portal with RTX was also developed using RTX Remix.