Interestingly, the #1 hit for Tetris on Google is freetetris.org which is endorsed with the Tetris trademark, yet it does not follow these guidelines. For examp

Interestingly, the #1 hit for Tetris on Google is freetetris.org which is endorsed with the Tetris trademark, yet it does not follow these guidelines. For example the pieces do not start "with their flat side pointed down".