Lumosity: Test Your Brain Power

Lumosity is a very interesting website. After registering as a member, you can play many mini-games that test your brain abilities. It mainly tests four functions of the brain: attention, memory, speed, and control. The Lumosity test is a progressive process, with a total of 30 stages, each stage having about 3 to 5 mini-games. It's a bit like leveling up, and after each session, your scores will be provided.