Tetris pieces illuminated on skyscraper
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Philadelphia gamers play skyscraper Tetris

Fans of the classic video game Tetris have helped mark its 30th anniversary by bringing the game to new heights.

Players in Philadelphia used a joystick to control the pieces displayed on the 29-storey Cira Centre building, 437 feet (133m) high.

Organiser and game designer Frank Lee already holds the Guinness World Record for the world's largest architectural video game display for a similar event with the game Pong in 2013.

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