Stroop is a real-time observation game based on the psychological Stroop Effect, which is a phenomenon caused by different functions of the brain interfering with one another.
The cards in Stroop each display a single word. The words are printed in several colors (black, red, blue, and yellow), sizes (big and little), styles (hollow and solid) and have different numbers of letters (three, four, five, and six). The challenge is to read one word and quickly match it with the description of another word-without regard to what the second word says.
A GAME OF PERCEPTION, PERPLEXION AND LAUGHS
There’s little time for mental hiccups caused by the psychological Stroop Effect, where different functions of the brain interfere with one another. Think clearly. Act quickly. Laugh well.
THEY’RE JUST CARDS, RIGHT?
The cards in Stroop each display a single word. The words are printed in several colors (black, red, blue, and yellow), sizes (big and little), styles (hollow and solid) and have different numbers of letters (three, four, five, and six). The challenge is to read one word and quickly match it with the description of another word—without regard to what the second word says. Race to empty your deck before your opponents!

