In Trauma Center: Under the Knife, the patients' lives are in your hands! Heart surgery and tumor removal might look easy from the morphine end, but how do you think the doctor feels? Well, you're about to find out! The Nintendo DS puts you above the operating table with 10 different instruments at your surgical disposal. As Dr. Derek Stiles, you'll experience all the drama we've come to expect from the medical field. So go ahead, toss on some scrubs and step into the O.R. - it's time to play doctor.