It's the classic game of picture telephone (sometimes known as Eat Poop You Cat).

One person draws a picture, the next writes a caption for that picture, the next draws a picture to match the caption. Watch the idea mutate in unexpected, hilarious ways!

Quick Play matches you up with random users on the Internet. Or you can invite your most -- or least -- artistic Facebook friends to a Friend Game.

Make your drawings as complicated as you want -- the app comes with a powerful drawing engine. It's got over a dozen brushes (hard, soft, splotchy, streaky, stars, droplets, etc.) with customizable size and opacity, a color picker, zoomable canvas, and unlimited undo.