The BONG tetrinet server is back ! Tetrinet is a multiplayer tetris game available for windows and with clones in most other operating systems. There are even windows tetrinet clones if for some reason the original doesnt suit. Go google tetrinet and download it.

Server is 'tetrinet.games.bong.com.au'. Just start up tetrinet (you may need to delete the .ini file if things dont work right) wack in the server name and click connect. There are multiple channels etc, its all there.