The latest in Nintendo's "Touch Generations" series, Wii Fit aims to prove that videogames can actually help enthusiasts burn calories, not just stockpile them. A retail bundle containing a balance board peripheral and collection of 40-plus interactive activities, it's as much virtual fitness trainer as digital diversion. Capable of tracking eight players' weight, body-mass index and calorie-burning progress, the title should broaden the Wii's overall appeal beyond the usual gamer audience.

Challenges are divided into four core areas: aerobics, strength training, yoga and balance games, with gameplay equally varied. Sometimes you do lunges, squats or torso twists, stepping on the balance-sensing board or using it to support your hands while performing planks and push-ups. Other times you may: slowly walk in place, arms outstretched to cross virtual tightropes; mimic leaping motions to vault off slaloms; or lean left and right to guide tumbling balls by tilting moveable 3D backdrops. Additional applications include jogging (accomplished by putting the remote control-like gamepad in your pocket and performing running motions), making pelvic thrusts to keep hula hoops spinning or practicing deep breathing techniques. All the moves are designed to increase core strength as well as provide an actual sweat-inducing workout.

Downsides include slow-paced play, periodic hernia-inducing motions, games you must unlock through time-consuming progress, patronizing self-motivational dialogue and the ever-present possibility of taking a nasty tumble. Still, it's scant aggravation to see a videogame manufacturer debut an outing that's sure to be an instant hit with women and seniors as well. Better yet, as even those who haven't been chomping on Cheetos on the couch can take heart knowing, the balance board can also be used with more lighthearted third-party titles like We Ski too. It's a welcome addition to any daily routine.