More the nerdy side of things but the multiplayer element used IRC as communication and matchmaking infrastructure. Command & Conquer RA2 series too utilised IRC for matchmaking, Dreamforge IRCd to be exact.

Worms Armageddon was the bomb and the PlayStation One version brought original epic fun.

sometimes people violated the rules and used the donkey in local matches. some of them used to get pretty mad

I remember bringing worms 1 on a diskette to my schools computer lab and playing with classmates, we all got hook and had good times. Then Worms Armageddon came out many days after school were enjoyed blasting each other with bazookas, sheep and holy hand grenades.