Goal

Danger cells are briefly highlighted — memorise them. Then they hide. Tap every safe cell without tapping a danger zone.

Progression

The number of danger cells increases each round (5 up to 15), and you get less time to memorise them. The clock pauses while they show.

Scoring

Each safe tap earns points equal to the round's danger count. A danger tap costs 30 points and 1.5 seconds; from the second one in a round, the remaining dangers flash as a hint. Clear rounds without a danger tap to build a streak.

Tips

• Group the danger cells by position (corners, middle row) rather than treating each as separate.
• Take a full breath during the reveal phase — rushing the encoding costs you more time in recall.
• Tap the cells you're surest about first, then fill in the rest.

Inhibitory Control

Actively suppressing the urge to tap highlighted cells directly trains the prefrontal cortex — the brain region responsible for self-control and impulse management.

Spatial Memory

Remembering where not to click is as cognitively demanding as remembering where to click, exercising spatial working memory differently.

Working Memory Capacity

Holding an increasing number of forbidden locations in mind pushes the limits of your working memory, gradually expanding its capacity through challenge.