It's called, simply, "Place." And it's a blank canvas that internet forum Reddit gave its users to create with on Friday. Was it a strange April Fool's joke or a social experiment to see how quickly things devolved into penises and memes?
"There is an empty canvas," the description of the page reads. "You may place a tile upon it, but you must wait to place another. Individually you can create something. Together you can create something more."
At the time of publishing, 61.2K people are on the page, working away to attempt to build art with each other, or to selfishly destroy what others have created before them. Already today I saw Mona Lisa go from this: