I actually came up with this idea a few years ago, but didn't have the motivation to go through with it until now.
The general idea came from Conan O'brian's sketch "What in the World?" where he would show an extremely magnified image and then zoom out until the image was recognizable. I took the idea and ran with it a little bit and decided to make a game out of it. Basically, users will either upload and crop their own images for others to figure out or make guesses on other contributor's images.
So what are you waiting for? Create an account (or login) and start uploading and/or guessing!