S is for Stupid is a browser game shaped like a children’s alphabet book. Each letter has a page, and each page is a small joke, a fake form, a progress bar that lies, a button that moves, or a letter that should not exist. You go through the alphabet from A to Z, or at least that is what the book says you are doing. Several letters have opinions about the order.
It is a comedy game more than a puzzle game: the pleasure is in what each page does, not in solving it. It takes ten to fifteen minutes, and it remembers which letters you have finished so you can come back.
Made by Josh Hamburger in Canada, originally as a much older game and rebuilt for the browser. Free, no sign up.