The Little Blanket on the Balcony

A small blanket is hanging on the balcony, and your only job is to pull it. Every three pulls count as one day, and each day the blanket creeps a little closer to the edge. The rules take a second to learn but the rhythm is harder than it looks, so you keep pulling just to find out which day the blanket finally drops. It is free, needs no download, and opens straight in your browser.