Lumosity: Online Brain Training

Don't have Brain Age for the Nintendo DS? That's okay! Lumosity is a cool web site with games and activities similar to Brain Age, which are intended to keep your mind fit. There are memory, concentration, and arithmetic games that stimulate your brain while you have fun! Simply create a free user profile (requires e-mail verification), and then start playing. Lumosity tracks your progress and you can also view other users' high scores and challenge others to beat your score.