There's also the problem of cheating which creates a reputational issue for the game and frustrates players. Many multiplayer games suffer from cheating.

You can add Visual Basic 3 and Turbo C

There's a security problem (and hence legal liability) when two people know each other's IP addresses.

There's also a complex networking situation when people are behind NATs, firewalls, etc.

It's like what Gamespy was back in the day, or XQF. THe All-Seeing Eye (ASE) was pretty good too but is defunct. Maybe XQF is still around.

Those provided a list of servers for game servers, for games that didn't have a centralized list of servers.

They capitulated to TikTok by adding thirst content and suggested content based on activity.