Whirlwind fad is the only way to describe OMGPop's Draw Something. With zero publicity, the app somehow became a viral hit at the height of its runaway success in 2012. Draw Something wormed its way onto over 50 million phones within its first 50 days. The game’s pretty simple: Players draw pictures of a word and then it's up to another friend to guess the word as the picture is drawn back, stroke for stroke. At its peak, over 3,000 drawings were made per second.
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Credit: Mashable