Pairing Shapes is an entertaining and effective brain-training game to challenge your memory and your cognitive capabilities. You have to find the pairs of shapes that are hidden under the tiles, with a choice of 10 different difficulty levels, from the easy to the diabolical, and try to outscore yourself or your friends. Pairing shapes belongs to the Smartbrain Games collection of brain-training activities designed to keep your brain fit. You have many others to download. Look for them!