Click the exact mathematical center of a fading circle. A one-shot visual perception game scored to 0.01%.

Find the Center is a one-click visual perception mini-game where you must locate the exact mathematical center of a circle whose boundary fades into a soft gradient. Because there is no crisp edge to anchor your eye to, raw intuition rarely gets you past 99%. The moment you click, the pixel distance between your click point and the true center is converted into an accuracy score from 0 to 100%, displayed to two decimal places. One shot, one decision — that is the entire game.

The rules are minimal. There is no time limit, so take a breath, hover your cursor (or finger) over the circle, and let your peripheral vision read the whole shape at once. A common trick is to close one eye or sit a little farther from the screen so the faded edge resolves into a clearer "center of light." After you click, the true center is revealed, and you can immediately submit your score to the global ranking or send a challenge link to a friend to compete on the exact same circle.

Vision researchers call this task "centroid estimation." Your visual cortex handles sharp-edged shapes quickly, but when contours fade, the brain has to integrate the brightness distribution across the retina to estimate a weighted center of mass — a much harder computation. Interestingly, staring too long actually hurts: afterimages and peripheral drift accumulate, and most players score highest when they commit within three to five seconds.

Tips for a high score: (1) stop moving the cursor before clicking and use only tiny micro-adjustments; (2) ignore the dense core and instead balance the soft outer gradient along both the horizontal and vertical axes; (3) play in stable, even lighting; (4) on mobile, the edge of a fingernail gives a more precise hit point than a fingertip pad.

FAQ — Q. Is 99.99% really possible? A. Yes, but a true 100% requires zero pixel distance, which is rare. Q. Is every circle the same? A. When you open a challenge link, you and your friend see the identical circle for a fair head-to-head. Regular play generates a fresh position and size each round. Q. Does mobile play feel as accurate? A. Yes — touch coordinates are read at full pixel precision, so phones and tablets are on equal footing with desktop.