What is Forza Motorsport 4 Recompilation?

Forza Motorsport 4 Recompilation is an open-source recompilation of Forza Motorsport 4. The original game's compiled code translated into a native program for a new platform, usually a PC port. The original game ran on Xbox 360.

Do I need the original game files to run Forza Motorsport 4 Recompilation?

Yes. The project does not include the original game's assets, so you need your own copy.

How is Forza Motorsport 4 Recompilation licensed?

project: GPL-3.0-only (material this project is entitled to license). The repository itself is the authoritative source.

Forza Motorsport 4 Recompilation

RecompilationActive

The original game's compiled code translated into a native program for a new platform, usually a PC port.

Based on Forza Motorsport 4

Forza Motorsport 4 Recompilation screenshot

Links, repository & details

About

An experimental static recompilation of the Xbox 360 version of Forza Motorsport 4 using ReXGlue. It is an experimental alpha source release; on the tested Windows AMD64 system it can boot into the game, load an existing profile, complete races, save career progress, and progress from Amateur through Clubman into the Sportsman tier. The campaign beyond that point has not been validated.

Getting started

The repository contains no game data, Xbox system files, saves or compiled executables, so you must provide files from your own copy of the game, extracted into a folder containing default.xex and two facade executables. Requirements are Windows AMD64, Git, CMake 3.25 or newer, Ninja and Clang. Run the supplied Build-Local and Run-Local PowerShell scripts with the path to your extracted game data. Content packages from your own Disc 2 can be installed with a provided launcher script.

Known issues & limitations

A fresh profile may save a blank car thumbnail, and the blank image may remain in the thumbnail cache.
Full readback can cause stutter and frame rates around 30 FPS on some workloads.
Higher internal resolution and timing overrides are not considered safe.
Car-thumbnail generation is under investigation; a fresh profile can save a blank thumbnail with the car missing.

What you need to run it

Original game files required. The project ships code only; you provide your own copy of the game (Xbox 360 version).

You must provide files from your own copy of the game.
The game files must be legally obtained and extracted.

Features

The project can boot into the game and load an existing profile.
Races can be completed and career progress saved.
The project can install all four content packages from an extracted Disc 2.

How to install

For Disc 2 content, extract the four marketplace-content packages into one directory, then run the Disc 2 installer.
After installation, normal launches use the installed copy in user data, so the source directory is no longer needed.

Summarised from the project's README.

Licensing & legal

The project is licensed GPL-3.0-only, applying only to material the project is entitled to license.

Additional notes

Performance: The validated graphics profile is conservative and uses full resolve readback, so it can stutter and may run at about 30 FPS even when the host GPU is not fully utilized.

FAQ

What is Forza Motorsport 4 Recompilation?: Forza Motorsport 4 Recompilation is an open-source recompilation of Forza Motorsport 4. The original game's compiled code translated into a native program for a new platform, usually a PC port. The original game ran on Xbox 360.
Do I need the original game files to run Forza Motorsport 4 Recompilation?: Yes. The project does not include the original game's assets, so you need your own copy.
How is Forza Motorsport 4 Recompilation licensed?: project: GPL-3.0-only (material this project is entitled to license). The repository itself is the authoritative source.