Stop Signal

An arrow points left or right — tap that way, fast. But if it flashes red, slam on the brakes and DON’T press. The red cue creeps later each time you stop in time, hunting the exact edge of your control. The gold-standard test of response inhibition.

Trains: Response inhibition · Category: Attention & Speed

How to play: Stop Signal is a free, browser-based brain-training game in the Brain Gym suite. Play it instantly — no sign-up, works offline, and your best scores are saved on your device.

Play Stop Signal · All Brain Gym games