If you downloaded a custom Menu Driver (a .dll on Windows or .so on Linux):
This guide shows how to locate, download, and install custom themes (also called playlists/skins/UI themes) for RetroArch on desktop platforms. Assumes RetroArch is already installed. Steps focus on the most common theme types (Desktop GL, XMB, Ozone, and MaterialUI skins). retroarch custom themes download
If you cannot find the perfect RetroArch custom themes download, make your own. It is surprisingly easy. If you downloaded a custom Menu Driver (a