NUMBER ORDER · 12 ROUNDS
Select four numbers from smallest to largest before the timing bar empties.
Complete 12 timed rounds. A mistake or timeout is recorded, then the test continues.
READY?
Press position keys 1–4, or tap the number cards, from smallest to largest.
Keyboard: 1–4 choose visible positions · Touch or mouse: tap each number card
HOW TO PLAY
Start a run and scan the four different numbers.
Choose their screen positions from the smallest number to the largest. Selected cards stay visibly marked.
Finish 12 standard rounds, or protect a perfect endless streak while the timing window shrinks.
NUMBER ORDERING
Each round combines rapid visual scanning, magnitude comparison, working memory, and a four-step response.
The game is for recreation and practice, not diagnosis. Device latency, screen size, input method, and practice can affect results.
READ YOUR RESULT
Average and best reaction times use correctly completed sequences only. Standard accuracy includes mistakes and timeouts.
For a fair personal comparison, use the same device and input method each time.
QUESTIONS
Select all four from smallest to largest. Keys 1–4 match the cards from left to right, and touch players can tap the cards directly.
Timing starts when the four numbers appear and stops when you finish the sequence, make your first mistake, or run out of time.
The deadline falls from 3.6 seconds toward 0.9 seconds. Later rounds also use numbers with smaller differences, making them harder to scan.
Only in endless mode. Standard mode records the mistake and continues until all 12 rounds are complete.