Use Chrome Remote Desktop or Parsec to control your home PC from a school or work computer. You are effectively using Fusion remotely—no portable setup needed.

If your goal is simply to test games on multiple computers, use Fusion’s built-in “Build & Run” to generate an EXE. That standalone game is truly portable (no engine license required to play).

| Problem | Solution | |---------|----------| | “Runtime error 339” | Missing OCX/DLL. Copy the System32 dependencies to your USB’s Redist folder and register them with regsvr32. | | License request on every launch | The registry merge failed. Run the .bat as administrator. | | Build fails with “Out of memory” | USB drive is too slow. Move the project to the local desktop temporarily, build, then copy back. | | Extensions missing (e.g., Physics, Window Control) | Extensions are stored in %appdata%\Clickteam Fusion. Copy that folder to the USB and adjust your script to map it. |

A standard installation spreads files across Program Files, AppData, and the Registry. A portable deployment requires the redirection of these dependencies:

A "portable" version of software refers to a version that does not require installation. It is typically stored on a USB thumb drive or an external hard drive. You can plug the drive into any Windows computer, run the executable, and the software runs without modifying the host computer's registry or leaving files behind.

While the creation of a portable version is feasible, it is not without technical hurdles.