: Features a completely rewritten weather system, simulated global illumination, and 4K textures for trees, roads, and vehicles.

: Thunks can now be defined directly within slices, improving code organization for asynchronous tasks.

: Adds creative, multiplayer, and survival modes, allowing players to build their own traps and weapons. SMOD Redux (Half-Life 2)

: Uses the createSlice API to automatically generate action creators and types, drastically reducing "boilerplate" code.

: Introduces the builder syntax for reducers, which provides better type checking and readability. Doom 3: Redux

: Uplifts the original game with massive overhauls in lighting, UI, and sound without changing the core gameplay.

: Includes a brand new police system, revised weapon physics with realistic recoil, and enhanced vehicle handling. Redux Toolkit 2.0 (Software Development)

While there is no single file named exactly with a universally defined set of features, several popular "Redux" game modifications and software toolkits offer specific improvements. Based on your request, here are the standout features of major Redux-branded projects: GTA V Redux