Open Task Manager and end all pythonw.exe processes. These are orphaned Ren’Py instances.

Ren’Py versions are separate folders. To uninstall Ren’Py 7.5 but keep 8.1:

This removes the launcher’s GUI preferences.

Follow this comprehensive guide to wipe Ren'Py completely from Windows, macOS, and Linux. Phase 1: Delete the Core Ren'Py SDK

: Ren'Py often stores game-specific save data and persistent variables in a hidden directory.

for publishing games, ensure you back it up before deleting the directory if you plan to use it again. Reinstallation