A new website that lets you paint over a world map with other users in real-time has taken the digital illustration community by storm. That said, it appears to be straining under the weight of its explosive popularity, limiting its availability. Those limitations mean that Wplace users either have to work extremely slowly and hope that nobody paints over their progress, or collaborate on large projects with help from other users. That makes some of the expansive paintings that have been shared across social media all the more impressive. The website has attracted more than a million users since Friday.