A CAPTCHA is a reverse Turing test that takes the form of a challenge-response test. For example, if it instructs users to "select all images with stairs," they must pick the stairs out from railings, driveways, and crosswalks. Alternatively, they may be asked to enter the text they see, add the sum of dice faces, or complete a sliding puzzle.
I'm Not a Robot is a fun spin on the popular CAPTCHA game synonymous with using the internet. Except it's not just one game, but 48 increasingly absurd puzzles designed to help you prove you have a soul-and the patience to parallel park a Waymo using your arrow keys. The game begins as you'd expect. Level 1 asks you to check a box to prove you're not a robot. Level 3 prompts you to decipher text wiggling on the screen.