Free brain training with different types of brain games and brain teasers e.g. mental arithmetic, memory training (Mnemonic), speed Sudoku (Speedoku) for all age groups. In the refined online league-system you can match yourself with the rest of the world. Cup ties, championships and the mind games for the Hall of Brain and the Brain of the Day will pep up your grey matter. Also offline usable - online usage requires free registration.