[aranelsurion]

> don't work on Windows 11 but do on Linux (e.g., Red Alert 2).

Huh? But I do play Red Alert 2 on Windows 11 and it works just fine. Also can play online through CNCnet.

Is this something about a particular version not working, or some copy protection issue?

[chocochunks]

It can be made to work with patches like those provided by CNCnet, but in my experience just installing it doesn't tend to work.