Topic - The Tetris Co.

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The classic video game Tetris is played on the 29-story Cira Centre in Philadelphia, Saturday, April 5, 2014, using hundreds of LED lights embedded in its glass facade. The spectacle kicks off a citywide series of events called Philly Tech Week and also celebrates the upcoming 30th anniversary of Tetris. (AP Photo/ Joseph Kaczmarek)

Tetris in the sky: Gamers play on Philly building

By Kathy Matheson - Associated Press

The classic video game Tetris is played on the 29-story Cira Centre in Philadelphia, Saturday, April 5, 2014, using hundreds of LED lights embedded in its glass facade. The spectacle kicks off a citywide series of events called Philly Tech Week and also celebrates the upcoming 30th anniversary of Tetris. (AP Photo/ Joseph Kaczmarek)

Philly skyscraper-sized Tetris game wows hundreds

By KATHY MATHESON - Associated Press