[HELP] How to prevent Linux users from playing?

[MAJ]

Hello, I need some help or knowledge if its even possible... how to prevent linux users from playing the Server?

Is there anything I can do about this?

I use S6 MuEmu files.

[MentaL]

[KarLi]

Hey
well they use wineHQ and they can play anything thats windows made right?
and why would u do that? i thought thats a good thing!

[myheart]

you can check in.
HKEY_CURRENT_USER\Software\Wine
HKEY_LOCAL_MACHINE\Software\Wine

ExitProcess if reg key exist