Stop signal
Press fast for one colour and hold back for the other
What it looks at
How well you balance reacting quickly with holding back. Every circle has a correct response, and the kind of mistake matters too: pressing when you should hold back, or missing a circle you should press.
How to play
Circles appear one at a time in the middle of the screen, about every one and a half seconds. When a red circle appears, press Space or tap Press as fast as you can. When a green circle appears, do nothing.
The circles keep coming whether or not you respond, and the run lasts about 2 minutes.
Most accounts say press for red, and a few say green, so you can practise either
- SpacePress
Tap the large Press button
This recreates the published format from public descriptions, and the exact settings aren't public
Involves brief flashes, never more than three a second
AccessibilityColours, motion, text size
- Colour-blind-safe colours
- Reduce motionFollowing your device setting
- Larger text and shapes