You definitely don't want to flip a burger multiple times. There is a drastic difference in quality. They advocate it cooks the middle more, but the real trick is to move the burger to the side of grill that is off and close the lid to cook it like an oven.
It's a rule in many kitchens I've been in to only flip once, because you don't want to lose the juices from the fat.
This game is great, but is geared more towards digital logic instead of coding.