No matter how advanced video games become, purists of the pastime will always have a soft spot for the classics. Older, more simplistic games also help when you're planning to play on a 29-story building.

As part of Philly Tech Week, Drexel University professor Frank Lee organized a Tetris game this weekend using light displays attached to a highrise building in downtown Philadelphia, Mashable reported.

"This project began as a personal love letter to the games that I loved as a child - Pong last year, Tetris this year," Lee told the Associated Press. "But it ended up as a way of uniting the city of Philadelphia."

A crowd numbering in the hundreds watched lottery winners man joysticks and play Tetris in old and new ways. Lee manipulated the game so that players could play a cooperative version, according to Mashable.

One notable attendee was game designer Hank Rogers, now managing director of Tetris Co. In the 1980s, he brought Tetris to the mainstream by converting it to Game Boy.

"If a game lasts a year, that's amazing," said Rogers of the way video games rise and fall out of popularity. "They usually go out of style very quickly.

Tetris was invented nearly 30 years ago (the anniversary is this June) by Russian computer programmer Alexey Pajitnov.