I a large part of my childhood, around age like 9-12, playing SW: Jedi Outcast and Jedi Academy multiplayer. Hanging out on a JAVA server with people I met over there, being part of a clan with regular practice that attended tournaments, but most of the fun was just chilling on the server, exploring the plethora of custom maps filled with secrets, and having a great time.
The experience is something I can't imagine in this day and age, epsecialy because matchmaking killed this kind of friendship between random players, and most of the social aspects of games. All of the Free For All servers were mostly about just chilling, with combat only done in agreed-upon duels that had it's own unwritten rules/etiquette that everyone respected. The community was amazing.