How to play
Every round shows a grid of tiles that all look the same color, except one. That odd tile is a touch lighter or darker than the rest, and your job is to find it and tap it. You start at Level 1 with a simple two by two grid and an obvious difference. Every couple of levels the grid grows, all the way up to eight by eight, and the gap between the odd tile and its neighbors keeps shrinking until it becomes very subtle. You begin with 15 seconds on the timer. Each correct pick adds 0.7 seconds back, while a wrong pick costs a full second, so careful choices beat frantic tapping. The time bar at the top drains as you play, and the run ends the moment it hits zero. When that happens, the game briefly outlines the tile you were looking for, then shows how many levels you cleared as your score. Keyboard players can move around the grid with the arrow keys and choose a tile with Enter or the space bar. The percentile on the results screen is a loose estimate built from expected difficulty, not a ranking of other visitors. Keep in mind that this is a casual game and not a medical color vision exam. Screen brightness, color settings, night mode filters, and even the light in your room can nudge the outcome, so a lower score on one day is nothing to worry about. If you are curious about your actual color vision, an eye care professional can help.
Tips for a better score
- Turn off night mode or blue light filters before playing, since they flatten subtle differences between shades.
- Look at the whole grid at once instead of scanning tile by tile. The odd one often jumps out of your peripheral vision.
- A wrong tap costs more time than a correct one earns, so pause for half a second when you are unsure.
- Tilting a phone can shift how colors appear on some screens. Hold it straight and keep the brightness steady.
- Large grids get tricky fast. Try relaxing your focus slightly and let the odd tile pop out on its own.
FAQ
Can this game tell me if I am colorblind?
No. It is designed for entertainment and only tests small brightness differences within a single hue. For a real assessment of color vision, please see an optometrist or eye doctor.
How is the top percent figure calculated?
It comes from an estimated curve based on how hard each level is, not from scores collected from other players. Use it as a lighthearted comparison only.
Why do my scores change between phone and laptop?
Displays differ a lot in brightness, contrast, and color tuning. A shade gap that looks clear on one panel can almost vanish on another, so compare results on the same screen.