Mega Brain Boost - Nintendo DS Get three full brain games on 1 game cartridge Play a friend in any of the 15 game types to see who has boosted their brain the most Choose from 4 levels of difficulty for each multiplayer game type Increase your level of difficulty by answering correctly Games in speed, accuracy, recognition, numbers, circumstances, faces, images and more Get three full brain games on 1 game cartridge Play a friend in any of the 15 game types to see who has boosted their brain the most Choose from 4 levels of difficulty for each multiplayer game type Increase your level of difficulty by answering correctly Games in speed, accuracy, recognition, numbers, circumstances, faces, images and more