React to the signal
Use color labels and shape symbols to identify the target. Tap the one tile matching both when the grid appears.
Spot the matching color and shape, then react to the correct tile.

Level 1 starts with three single-tile questions, then two with two tiles. Choose the matching tile after it appears. Wrong taps can be corrected on the same board. A correct answer automatically advances to the next question.
Use color labels and shape symbols to identify the target. Tap the one tile matching both when the grid appears.
There is no time limit. After a wrong tap the clock keeps running and you can choose again on the same board. A correct answer automatically advances to the next question.
Your record is the sum of response times plus 1.5 seconds per mistake. Breaks between questions do not count.
99 stages total. Every 11 stages, the level increases.
| Level | Stages | Board | Questions |
|---|---|---|---|
| 1 | 1–11 | 2 | 5 |
| 2 | 12–22 | 4 | 6 |
| 3 | 23–33 | 9 | 7 |
| 4 | 34–44 | 9 | 8 |
| 5 | 45–55 | 9 | 9 |
| 6 | 56–66 | 16 | 10 |
| 7 | 67–77 | 16 | 11 |
| 8 | 78–88 | 16 | 12 |
| 9 | 89–99 | 25 | 13 |
Measure the speed from detecting a signal to responding across several trials.
This game focuses on a single signal, without a task to memorize numbers or positions.
Focus on detecting the signal and responding accurately rather than solving a complex puzzle.
Resist pressing before the signal and maintain attention through the final trial.
Choose a Time Attack











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