[3] TetriNET plays like standard multiplayer Tetris but with a twist: clearing rows will cause special blocks to appear in the player's field.

The effect depends on the type of special block: The last player still able to place pieces in their field is the winner.

This music is known as "The Dance of the Spheres" and its authorship is claimed by David Lilja,[4][5] who was known as Davie M. Karlsson when he wrote the midi file.

[3] In addition to the special blocks found in the original TetriNET, it has five new ones:[8] In late 2007, like other clones, TetriNET2 was shut down per the request of The Tetris Company.

As of early 2010, TetriNET2 is back up and running (per request of many fans that are not satisfied with the lack of game development by The Tetris Company).