A University of Wisconsin study has determined that playing golf on a Nintendo Wii burns one fewer calorie per minute than hitting balls at a driving range. According to the results, playing the Wii burns 3.1 calories per minute vs. 3.9 calories per minute hitting balls at a driving range.
It of course does not burn nearly as many calories per minute as walking and playing a course (8), but actually comes close to the energy expenditure of those who ride a cart (5).
Of all the Wii sports games, boxing burns the most calories, at 7.2 a minute. Tennis burns 5.3.
Note that neither of those is as much as walking through a round of golf.