Tetris is turning 30 (yes, thirty!) in June, so some folks threw it one epic pre-birthday party at Philly Tech Week's kickoff event this April 5th. What'd they do, you ask? They used the 29-story Cira Centre building as a screen to play an enormous game of Tetris that could be seen in many parts of the city, as you can watch in the clip after the break. While this isn't the first time someone rigged the facade of a building to play Tetris -- there was that one time in France and another at MIT, which was actually a brilliant prank by its students -- this is possibly the largest attempt, thus far.