This recreational game supports general cognitive engagement. It is not a medical assessment, diagnosis, or treatment.
How to play
A target card appears with a color and a shape. Read the current rule, then choose the card that matches the target by color or by shape. The rule changes during the session, so check it before every answer.
Choose untimed, relaxed, standard or challenge pacing. Use touch, mouse, or keys 1–4; press Esc to pause. Hints remove two incorrect choices.
Comfortable play
Start with untimed mode, use the large cards, and pause whenever you need. This recreational activity is not a medical test and its score should not be used to assess a condition.