You can use JoiPlay for this. Download the program, the plugin for ren'py and simply add the same file as on this site.(I found this out almost by accident when I decided to try using the Doki-Doki game file)
Hello! I know it's been a year but.. could you please tell me what ver of joiplay I need to dl?
Just download the latest version, its doesn't matter
It's not working though...
