I have server running in basement all the time. I start Games on Whales over ssh and then launch Moonlight on macOS client. You can do it completely remotely. Only pre-condition is that computer must be turned on. I tried Sunshine as well but it was too much pain and not so effortless.

Nice, thanks! You can't do that with Moonlight in Linux, I always needed to log in to my session first in person.