Is Multiplay possible?

Hello fine people of Citra,

Just wondering if anyone knows how to (or if it is possible to) run 2 instances on the same computer?
I realize linking will be impossible but it would be nice to play with a friend like we used to with GBA and DS games

thanks in advance

You can run as many instances as your PC resources allow you to run, but none of them will communicate with each other in order to do what you want (in this case, playing with someone in the same computer)

So no way for it to accept background input like GBA and DS emus do?

Not now (and no one is working on it, afaik)

Background input is way different from networking. You can use something like autohotkey to send inputs to citra if citra doesn’t support background input