From Wikipedia: Brain Boost, also known as The Professor's Brain Trainer in Australia and Europe, is a series of three brain-training games developed by Interchannel for the Nintendo DS handheld game console. Brain Boost was originally released in 2005 in Japan. Majesco Entertainment published the first two games in the series in the United States on November 17, 2006, and the third game on January 22, 2008. Each game consists of five related mini-games.