Off By One: Spot The One

Among a neat grid of geometric shapes, just one is slightly off. There is no timer. No hurry. Just a quiet moment of seeing. On the train, between tasks, before sleep — a small ritual to bring your focus back. ■ 35 stages, 3 difficulty modes Stages 1–20 use a 4×4 grid. Stages 21–35 use a 5×5 grid. Each stage consists of 5 puzzles. Choose Easy, Normal, or Hard to play at your own pace. The leaderboard ranks Hard only. ■ Endless mode 4×4 Hard. The puzzles get harder as you go. One mistake ends the run. A separate Game Center leaderboard tracks your best streak. ■ 10 shapes Triangle, square, diamond, pentagon, circle, ellipse, hexagon, octagon, star, hexagram. Each with its own kind of nuance to spot. ■ 6 dimensions of difference Size, position, angle, thickness, count, edge length. One shape, just slightly off. ■ No timer, no pressure Observe for as long as you like. The difference reveals itself to the patient eye. ■ 100-point scoring A clear deduction system based on misses and time. Clear in 20 seconds without mistakes for a PERFECT badge. ■ Serverless. No account. No network calls. No login required. Everything stays on your iPhone. ■ Privacy No personal data is collected. All stats are stored locally on your device. ■ Pricing Free to play, 10 plays per day. Watch a short ad for extra plays. Daily missions grant bonus plays when completed. For the small pauses in your day.