We've been playing Fortnite by "streaming" from xbox cloud gaming (for free) over the last couple of months. For the most part it's worked great. Sessions are limited to one hour, resolution is relatively low, and depending on the day/time... there can be more than a little input lag.

But this truly was the one game my kids couldn't play from Linux that they wanted to.

Amazon prime gaming and GeForce Now also allow linking epic accounts to stream games. I've read GeForce now offers a free, somewhat limited tier as well... but we haven't tried it yet.

Is strange using a game streaming service from proper Linux-only gaming rigs... but I think that’s the only real option right now. :)