Spot the Difference
Two procedurally generated pictures, a handful of deliberate differences — click a change in either picture to mark it found.
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About this tool
Each puzzle is generated on the fly: a scene of coloured shapes is built, then a handful of those shapes are changed — a different colour, a shift in position, a different size, or hidden entirely — to make the second picture. Click on a difference in either picture to mark it as found; a dashed outline will appear around it in both pictures. Find every difference to win, or use "Reveal Remaining" to see what you missed, and "New Puzzle" for a fresh scene.