PhysX (32 bit)

ZLUDA has a limited implementation of 32-bit CUDA tailored for PhysX. There are three ways to use it:

Steam game

Open the game’s “Properties” and enter the following in “Launch Options”:

"<PATH_TO_ZLUDA>\32\zluda.exe" -- %command%
Using launcher directly

Open a command prompt and launch the game with 32-bit zluda.exe:

<PATH_TO_ZLUDA>\32\zluda.exe -- <PATH_TO_GAME_EXE>
System install

This is not a recommended way to load ZLUDA. Use it only if nothing else works.
- Copy nvapi.dll and nvcuda.dll from the 32 directory to C:\Windows\SysWOW64 (requires Administrator permissions)
- Set the ZLUDA64_PATH environment variable to the ZLUDA directory (it must contain zluda64_server.exe)

Known Issues

Reinitializing PhysX might fail. Changing in-game PhysX settings can crash or hang the game.

If your game does not work, try collecting a trace.

When using a launcher (through Steam or directly)

Add the --zluda-trace option to zluda.exe. If you have access to an NVIDIA GPU, you can also collect a trace on NVIDIA with --nvidia-trace.
When using a system install

This is not a recommended way to load ZLUDA. Use it only if nothing else works.
- Copy nvapi.dll and nvcuda.dll from 32\trace to C:\Windows\SysWOW64
- Set environment variable ZLUDA_NVAPI_LIB to the full path to 32\nvapi.dll
- Set environment variable ZLUDA_CUDA_LIB to the full path to 32\nvcuda.dll

ZLUDA was tested with:

Most games should work. If your game does not work, see the Troubleshooting section above.