Tetris (idea)

Tetris metanode-like substance. (O is for nOdeshell, /msg btc with additions)

Games
Tetris
The Next Tetris (psx)
Tetris Attack
Tetrinet (see also: Everything Tetrinet University)
The New Tetris
M-x tetris
Tetrimania
Hextris
Bricklayer
Quadra

Playing
four-column Tetris strategy
Tetris rules
tetrad
Tetramino
tetricide

Programming
Tetris pseudocode

Origins
The Tetris Company
Alexey Pajitnov

Etc.
Tetris bigots
The Tetris Challenge from Hell
Cult of Tetris
Tetris complete
Tetris Dreams
Which Tetris block is the coolest?

And ...
Humilate the Other Player through Application of Geometry O


Oh, and btw, the classic Tetris pieces / tetrads / tetrominoes look like this:

 ___   _______   _       _   _____   _____   _____ 
|   | |_______| | |_   _| | |_   _| |  ___| |___  |
|___|           |_  | |  _|   |_|   |_|         |_|
                  |_| |_|