Wired:This Is Your Brain on Tetris By Jeffrey Goldsmith. http://www.wired.com/wired/archive/2.05/tetris.html

Tetris Story Article by Vadim Gerasimov on game development. http://vadim.www.media.mit.edu/Tetris.htm

Tetris: A History A timeline of events. http://atarihq.com/tsr/special/tetrishist.html

Seventeen Years of Tetris Slashdot article with birthday celebrations. http://slashdot.org/article.pl?sid=02/07/15/0158238

The Tetris Company Information about the legal issue of clones, including background, applicable copyright laws, "Look and Feel" cases, and links. http://www.abednarz.net/tetris.html

Wired: Tetris Pressures Game Act-Alikes By Judy DeMocker. http://www.wired.com/news/culture/0,1284,16619,00.html

Free Tetrix Includes game information, screenshots, and download. http://www.aimgames.com/ftetrix/