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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 Games published the first two games in the series in the United States on November 17, 2006, the third game on January 22, 2008. Each game consists of five related mini-games.

Brainboost is a metasearch engine designed to provide specific answers to questions asked in natural language. Currently it only supports English. The Brainboost engine uses machine learning and natural language processing AI techniques to answer the questions.