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Tetris has taken over a buidling in Cambridge, MA. MIT students actually did this as a prank and the building tenants didn`t even realize it. They MIT students converted the gridlike windows into a fully workable version of Tetris, complete with colored "pieces" and increasing levels of difficulty. This is a pretty funny prank and not surprising coming from MIT students!
Image Source: http://www.engadget.com/2012/04/23/tetris-hack-takes-over-mit-building/