Comment by sempron64
3 hours ago
It's amusing to me that in the 90s you could easily play Quake or Doom with your friends by calling their phone number over the modem whereas now setting up any sort of multiplayer essentially requires a server unless you use some very user-unfriendly NAT busting.
You can kinda solve that problem with STUN servers. Most games on Steam use Steam Datagram Relay, which also solves this: https://partner.steamgames.com/doc/features/multiplayer/stea...
Works really well with P2P games.
Glad you mentioned DOOM! Sometimes people forget that DOOM supported multiplayer as early as December 1993, via a serial line and February 1994 for IPX networking. 4 player games on a LAN in 1994! On release, TCP/IP wasn't supported at all, but as the Internet took off, that was solved as well. I remember testing an early-ish version of the 3rd party iDOOM TCP setup driver from my dorm room (10 base T connection) when I was supposed to be in class, and it was a true game changer.
What was even more amazing is you could daisy chain serial ports on computers to get multiplayer Doom running. One or more of those links could even be a phone modem.
Downside is that your framerate was capped to the person with the slowest computer, and there was always that guy with the 486sx25 who got invited to play.
Or slave two copies to yours and get "side view" which was only supported for a few releases IIRC - https://doomwiki.org/wiki/Three_screen_mode
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I wonder if there is a way to use tailscale to make it easy again?
Quite literally folks have done this for decades using Hamachi.
You usually just need to forward a port or two on your router. That gets through the NAT because you specify which destination IP to forward it to. You also need to open that port in your Windows firewall in most cases.
Some configuration, but you don't have to update the port forwarding as often as you would expect.
The reason you can't just play games with your friends anymore is that game companies make way too much money from skins and do not want you to be able to run a version of the server that does not check whether you paid your real money for those skins. Weirdly, despite literally inventing loot boxes, Valve does not suffer from this sometimes. TF2 had a robust custom server community that had dummied out checks so you could wear and use whatever you want. Similar to how Minecraft still allows you to turn off authentication so you can play with friends who have a pirate copy.