I'm not smart enough to set it up through command line and I haven't found a program I can get working (on Linux of course) yet. Probably a really dumb question but if we all connect to the same vpn sever would that work? PlayHide should work but I can't seem to download it off github. Any advice or do I just have to figure out cmdline?
Good old Hamachi still exists and has Linux client you can use. It's free as long as you're not needing to play with more than 5 people.