Eye test and spot-the-difference games
Sharpen your eyes with visual puzzles: odd one out, hidden objects, spot the difference and colour plates.
Spot the Difference
Compare two versions of a drawn room and find every change.
Hidden Objects
Find a list of small items hidden in a cluttered, procedurally drawn room.
Odd One Out
Spot the one shape that differs in a growing grid before the 60 second timer ends.
Colour Plates
Spot the shape or number hidden in a plate of coloured dots. A colour game for fun, not a medical test.
About the eye-test pack
These four games exercise visual attention: noticing a tiny change, finding a small object in clutter, comparing two scenes and telling similar colours apart. Odd One Out is a 60-second race to find the one shape that differs, with the grid growing as you improve. Hidden Objects and Spot the Difference each have thirty levels of drawn rooms, and Colour Plates hides a shape or number in a circle of coloured dots.
Every level is generated in code from a seed, so the daily challenge is identical for everyone on the same date and a friend can replay your exact puzzle from a link.
They are games and not a medical test. Nothing here can diagnose or rule out any vision problem, and your results do not say anything about your eyesight. If you are worried about your vision, see a qualified eye care professional.