Brain Genius puts you in the capable, cartoon hands of Doctor Labadidi, who invites you to take your daily brain training tests. Tests consists of mini-games within the Visual, Memory, Calculation and Concentration categories, one from each, with your overall score counting towards your brain rating.
There are four mini-games within each category, which are unlocked as you make good progress through your tests. With more games open, you'll sometimes get to choose which you face in your daily test, giving you the opportunity to veto one that you might not be quite as strong with. While you only get one opportunity to do the main test each day, you can try your hand at single exercises as many times as you want. In addition, you'll eventually unlock Sudoku and Kakuro puzzles to attempt.