LAN parties. I remember the first time I could connect two PC together. It was Doom, with a serial-to-serial cable. We were two players on the same fucking map. It was awesome!
Then coax cable networks with friends. We used to have two or three different networks during a LAN party since you could not disconnect the coax cable to add a player without stopping the current games. The players arrived later would plug a new network just for them, and launch a game waiting the first players to finish theirs.
Fantastic Contraption 2 is a puzzle game where you construct vehicules and catapults to get a red round in a square. It was really fun to play with a collegue. We would show our craziest contraptions. https://flashmuseum.org/fantastic-contraption-2/
Dicewars is addictive. https://flashmuseum.org/dicewars/ There are tons of remakes of it.
Spybot. Too bad it’s not in this library and can’t be played anymore : https://jayisgames.com/review/spybot-the-nightfall-incident.php It’s a small turn based RPG based on a LEGO universe.
I love the musics. After finishing the game, I played the main theme in my car again and again and again.