Card Sort

Sort each card onto a pile — but nobody tells you the rule. Match by colour, shape, or number? Read the ✓/✗ feedback to crack it… then the rule silently changes and you have to crack it again. The Wisconsin Card Sorting test of mental flexibility.

Trains: Mental flexibility · Category: Logic & Puzzles

How to play: Card Sort is a free, browser-based brain-training game in the Brain Gym suite. Play it instantly — no sign-up, works offline, and your best scores are saved on your device.

Play Card Sort · All Brain Gym games