From Data Crystal
Somebody confirm with a source that this is either the pirate or the original version.
- This is the version published by Tengen, a division of Atari Games (now part of Midway Games). It is "pirate" in the sense that the trademark license didn't have a valid provenance, but it's no more a "pirate" than, say, Somari. See the gory details on atarihq.com. --Tepples 01:20, 13 October 2008 (UTC)
Maybe rename the article?
I think that it would be better to rename this article to 'Tetris: The Soviet Mind Game' or 'Tetris by Tengen'.