Gravity Rush for Windows

Experimental native runtime for Gravity Rush Remastered and Gravity Rush 2 on Windows 10 and 11. This is a focused fork of Supermedo's PC port project.

The runtime is designed to execute PS4 x86-64 code natively and translate graphics to Vulkan. The Gravity Rush-only cleanup is complete, but the runtime remains experimental: neither game's playability has been verified. The launcher (Gravity Rush.exe / bbport_launcher_win.py) selects your game folder and starts the preparation and runtime pipeline.

No game files are included. You need your own decrypted PS4 dump of either game: Gravity Rush Remastered (regional CUSA01113/CUSA01130 releases) or Gravity Rush 2 (CUSA00547, CUSA03694, CUSA04934, or CUSA04943). Gravity Rush 2 patches target update 01.11. Optional: libSceNgs2.sprx from /system/common/lib/ of your console placed in system_lib/ for audio. This project is not affiliated with Sony Interactive Entertainment or SIE Japan Studio.

Implemented features

• Small offline Tkinter launcher for selecting either target game and starting it.
• Separate saves and GPU caches under user/<TITLE_ID>/ when launched through the launcher.
• Motion sensor & gyro support: Native DualSense/DualShock 4 gyro with complementary filter orientation, or simulated tilt (T/G keys or left stick in sensor mode) and shake (Y or Cross/A).
• Expanded memory mapping: Fixed 0x700000000–0x800000000 system-reserved window handling for Gnm GPU rings and buffers.
• Native Vulkan rendering with controller and keyboard/mouse input.
• Gravity Rush 2 01.11 FPS patch included. Gravity Rush Remastered uses its own game timing.
• Controller and keyboard & mouse support with custom remapping and multi-controller detection.
• Loose asset mods in mods/<mod-name>/app0/<game-relative-path>, without changing original game files.

Requirements

• Windows 10 (1903 or later) or Windows 11, 64-bit
• An Intel Core 4th generation (Haswell, 2013) or newer, or an AMD Ryzen (AVX, BMI1, MOVBE, LZCNT support required)
• A graphics card with Vulkan 1.3 and a current driver
• About 8 GB of free memory (RAM plus page file)

Launching a build

1. Build and package the runtime using the Windows instructions, or unpack an available build of this fork.
2. (Optional for audio) Copy libSceNgs2.sprx from your PS4 console to system_lib/.
3. Start Gravity Rush.exe (or python3 launcher/bbport_launcher_win.py).
4. Choose a decrypted PS4 game folder containing eboot.bin and sce_sys/param.sfo.
5. Press PLAY. The log is saved to last_run.log. Controller input is automatic; keyboard/mouse bindings are stored in input.ini.

Play Gravity Rush.exe starts the last selected game with the saved settings. The launcher stores its configuration in gravity-launcher.json. Existing saves from older layouts are not automatically migrated. BB_DATA_DIR overrides the data directory.

Current compatibility limits

The launcher recognizes Gravity Rush 2 by its listed title IDs. Remastered is recognized by CUSA01130 or a regional dump's display title (Gravity Rush Remastered / Gravity Daze Remastered). Gravity Rush 2 bundled executable patches are limited to update 01.11; other versions run without those patches. BB_FPS=30 disables the bundled FPS patch. Gravity Rush Remastered is prepared without bundled executable patches.

The runtime uses native rendering and offline services. The inherited co-op stack, temporal upscaler integration (FSR/DLSS/TAA), direct camera hooks, save-file hacks, language-file rewrites, and legacy effect/cheat controls have been removed. BB_RENDER_RES is unsupported; remove it from older configurations.

Title/version checks do not verify executable fingerprints. A matching clean dump is needed. PS Vita dumps and macOS runtime execution are unsupported.

Latest verification — 2026-10-15

• Python suite: 130 tests run — 79 passed, 51 skipped.
• Three standalone C++ checks passed: command-buffer ownership, motion-history utilities, and UI-composition utilities. These do not verify in-game rendering.
• Shell syntax, settings C++ syntax, and Git whitespace checks passed.
• Full native build: not verified. CMake configuration stopped because Vulkan headers and libraries are missing from the macOS development environment.
• Windows gameplay: not verified for either game.

Run the Python checks with:

python3 -m unittest discover -s tests

Skipped checks require native binaries, game data, or a particular host platform. The regression suite covers title recognition, FPS patch isolation, save/cache separation, mod overlays, and launcher preparation; passing it does not establish playability.

Building from source

See Windows build and packaging instructions. The remaining dependencies provide PS4 execution, Vulkan rendering, audio, input and the offline launcher. The former co-op stack, temporal upscaler integration and GTK launcher dependencies have been removed. Historical source attribution is retained in generic shared code; it does not enable support for other games.

Issues

If you encounter crashes, graphical glitches, or input problems:

• Check existing issues before opening a new one.
• When opening a new issue, include your hardware specifications (CPU, GPU, driver version), Windows version, game Title ID/version, and any log output or error messages.

Contributing

Contributions and pull requests are welcome:

• Fork the repository and create a branch for your fix or feature.
• Run regression tests (python3 -m unittest discover -s tests) before submitting.
• Keep pull requests focused and provide a clear description of changes.

Testers welcome

Playtesters and compatibility reports are greatly appreciated:

• Test with your own decrypted dumps of Gravity Rush Remastered or Gravity Rush 2 (01.11).
• Report performance, graphical fidelity, audio status, and controller/gyro responsiveness across different hardware setups.
• Share logs and crash details to help narrow down compatibility edge cases.

Credits

• Built on the native PC port base by Supermedo and deadinside28.
• Insights and fixes adapted from HayatoG/gr2_pc (system reservation, motion sensor, and geometry pipeline findings).
• Powered by the shadPS4 renderer and translation layers.
• Thanks to the contributors and upstream projects including SDL3, Dear ImGui, and the PlayStation 4 homebrew/emulation community.

License

GNU GPL v2 or later (LICENSE). Third-party components keep their own licenses.