http://h34nug3iwqjf2376fmmzdhgqivckzemcujmarlptfqeqtq7vya47yyad.onion/2007/02/21/gtetrinet-multiplayer-tetris-with-some-twists/index.html
User community You don’t have to search for others to play against you, you can just connect to one of the public servers, for example tetrinet.org or tetrinet.de, which - as far as I can tell - has active players at any given time of day. And I have checked this for years now. ;-) Servers I already mentioned the public available tetrinet servers but there are more.