Odd One Out

Find the one that differs, in 30 seconds. The grid grows and the difference shrinks from a whole picture down to a slight tilt or hue.

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Tap the one that is different. Each correct answer moves you up a level, and you have 30 seconds. The difference is either the picture itself (levels 1-6), the tilt, or the hue, and the board tells you which to look for. The grid grows from 3x3 to 8x8 and the difference shrinks, but never below what the eye can catch. Points scale with the number of cells, so deeper levels are worth more. A wrong tap costs you time. If colour differences are hard for you to see, you can turn them off on the title screen.