THE GAME IS ONE PIXEL is a timing game in which the whole playable area is a single visible pixel. The pixel changes colour, blinks, holds, and sometimes disappears. Your job is to work out the rule it is following and click at the right moment. There is no tutorial; the rules are taught by what happens when you are wrong, and they change as you go.
It is short, a little cruel, and best played with sound on. Because there is nothing to look at except the pixel, most people lean toward the screen within a minute, which is the intended effect.
Made by Josh Hamburger in Canada. Free, runs in the browser, works on phones.