In brain doctor you are the surgeon and must treat different patients. You must be sure that each surgery is successful and may use tools like the heart checking, stethoscope, thermals, blood, x ray and more. Choose one of the 4 surgeons to play with and if you want to play with real blood, candy or 2 other themes. Next it is up to you to check his health and keep monitoring your patient. Thenit is time to do your surgery, good luck!