Draw a Perfect Circle

Draw a Perfect Circle gives you one dot and one job: draw a circle around it, freehand, in a single motion. The moment you release the button the game measures your shape against a true circle and hands back a percentage. Most first attempts land somewhere in the 70s. Getting into the 90s takes a steadier hand than a game this simple suggests.

Each round takes about ten seconds, which is what makes it stick. The screen tracks your best score and your attempt count, so there is always a number in front of you asking to be beaten. Nothing unlocks and nothing costs anything. It is the same challenge over and over with a slightly better result each time.

A few habits genuinely raise the number:

• Draw slowly. Speed pulls the line outward at the top of the arc.
• Start at the bottom of the circle so your wrist finishes the motion where it began.
• Move your whole forearm if you have the desk space, since wrist-only motion traces an oval.
• Use a mouse if you can. Trackpad scores run lower.

The game is plain HTML5 canvas, so it opens in a second and runs on locked-down school hardware. For more drawing games on WTF Games, Draw love story turns drawing into puzzle solving, Hidden Paint 3D is a calmer colouring challenge, and SKRIBBL io puts your drawing in front of other players. All free in the browser, no download.