About this test: The Spot the Difference test trains visual attention and observation skills by challenging you to find subtle differences between two similar images. The scenes are procedurally generated with controlled differences to ensure consistent difficulty.
How to play:
Select your difficulty level, time limit, and number of trials
Click "Start Test" to begin
Two similar images appear side by side — the left is the original, the right has differences
Click on differences in the RIGHT image only
✓ marks found differences, red circles show wrong clicks
Click "Give Up" to reveal remaining differences (shown as green circles)
Find all differences or give up to proceed to the next trial
Difficulty levels:
Easy: 3 differences with larger, more obvious changes
Medium: 5 differences with moderate subtlety
Hard: 7 differences with smaller, more subtle changes
Types of differences: Color changes, size variations, position shifts, and shape alterations in the procedurally generated objects.