Number Sequence in the browser
Number Sequence is a 15-second pattern game. Three numbers follow a simple rule — add a step, subtract, double, or add the same amount. Tap what comes next. Built for a short break, not a hard exam.
Controls
Tap Start, then tap one of the four answers. Keys 1–4 work on a keyboard.
Scoring
Correct answers and streaks add points. Best 15-second score stays on this device.
Want a longer walkthrough? How Number Sequence Builds a Pattern.