Now, there’s a new option for these digital performers: Wii Music from Nintendo. This $50 game was designed for Nintendo’s hugely popular $250 Wii gaming system, of which there were more than two million sold in November alone, according to the company.

Wii uses motion-sensitive controllers to move characters in games. A game of tennis in Wii Sports, for example, works when you swing the Wii remote like you would a tennis racket. The Wii’s simple graphics and adorable Miis (on-screen cartoons designed to look like you) appeal to the non-gaming set, inciting parents to challenge their kids to games of Wii Golf and spurring senior centers to start Wii Bowling leagues.

People playing Wii Music use the remote as a musical instrument.

Nintendo carries this cutesy, user-friendly style of video gaming over to Wii Music, where the remote works as a musical instrument, cheerful songs abound and a white-wigged character named Sebastian Tute gives instructions. Along with Sebastian, the Tutes — a musically gifted group of Miis that would give the Von Trapps a run for their money — appear and demonstrate how to play various types of music and instruments.

Though it’s comparably priced, Wii Music differs from games like Guitar Hero and Rock Band in many ways, and there are understandable reasons why a frequent user of those games would shun Sebastian and the Tutes. For starters, teenage fans of Guitar Hero and Rock Band who like the games’ variety of popular songs may gripe about Wii Music’s selection, which includes the likes of “My Grandfather’s Clock” and Beethoven’s “Ode to Joy”; none of Wii Music’s songs are more recent than the late 1980s.

Perhaps the biggest difference is that, in Wii Music, you aren’t using a few fake instruments like a guitar or drum set. You are instead manipulating the Wii controller to simulate one of many instruments depicted on screen. There’s even one “instrument” called Dog Suit — a dog suit that, when worn by a Mii, uses canine barks in place of notes. Another key difference is that, aside from one game, Wii never penalizes you for playing an incorrect note in a song, because you can’t play a bad note — every press of an imaginary key or strum of an invisible string plays the correct note.

A musically gifted group of Miis — on-screen personas representing players — demonstrate how to play various types of music and instruments.

This “no mistakes” environment is a little bit like a sports league in which every kid gets a trophy. Wii Music got a bit too saccharine at times, like when I scored a lousy 43 out of 100 points in a game and Sebastian Tute assured me that points didn’t much matter so long as I played the way I wanted to play. But for people who are learning about music and don’t want to worry so much about playing the right note, OK: Wii Music fosters a freedom to experiment with style by allowing users to improvise and explore variations of songs.

Outside of the Games section, you are the judge of your own performance, rating it however you see fit, or not at all. Wii Music is divided into Jam, Lessons, Videos and Games. My favorite section was Games, which included conducting a song in Mii Maestro, hitting the right note at just the right moment in Handbell Harmony and arranging Miis from lowest to highest note in Pitch Perfect.

The more activities I completed, the more instruments and songs were unlocked and available for me to use; off the shelf, each copy of Wii Music starts out with 27 instruments, but over 60 can be unlocked in the game. In Lessons, Sebastian Tute explained the importance of each instrument in a song and the role that it played. Before I played drums in a reggae song, he explained that reggae drums lay down an eight-beat rhythm. In the Japanese style of music, I learned how to play and recorded myself playing all four parts of a song: taiko drum, bells, shamisen, a three-string guitar-like instrument that puts bass in the song, and flute.

If you’d like, you can opt to save your performances as music videos when you’re finished. These include your mistakes — err, improvisations — and some other funny effects like views of the audience members as they bob their heads listening to you play “Twinkle, Twinkle, Little Star.” Album covers can be made for these videos, and the finished product can be sent to other friends’ Wiis if they also have Wii Music. Those friends can play over parts of your song and send the revised video back to you. While you’re playing songs, small black notes with faces on them called Be-Bops appear in the bottom right of the screen and work as a metronome would, steadily keeping the beat.

But cool accessories like guitars and microphones that are used to play music with other games aren’t available for Wii Music; instead, you must use your trusty Wii remote and Nunchuk to make one of four motions: piano-type, guitar-type, trumpet-type or violin-type. These four motions work to play a variety of instruments in different music styles, but some are easier to pretend to use than others.

While playing the imaginary trumpet I held the remote like one, pressing its 1 and 2 buttons like trumpet keys. But playing the piano uses the same motion as that which is used for playing drums — a downward hitting motion with the remote and Nunchuk — and this felt more like using a hammer than playing a piano. If you own a $90 Wii Balance Board, you can use it in drum mode in addition to the remote and Nunchuk. I tried this briefly, and it was fun to use the balance board in place of drum pedals.

Wii Music isn’t meant to replace a music lesson, but it’s intended to get people thinking about music and their own music style, without fear of making mistakes. It’s fun, unintimidating and will even teach you a thing or two. Just steer clear of the Dog Suit, if you can help it.

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Edited by Walter S. Mossberg

• Mossberg Solution will return, Wednesday, Jan. 14. Email us at mossbergsolution@wsj.com. Find this and other columns and videos online free at the All Things Digital Web site: http://walt.allthingsd.com

The Wii Balance Board measures shifting weight.

For the past eight days, I’ve been stretching, crunching, yoga-posing and even running using this $90 package from Nintendo (NTDOY.PK). Wii Fit is the title of the disc that comes with the Wii Balance Board, a sturdy platform on which you perform your routines. The two are used together for various types of yoga, strength training, aerobics and balance games, which involve the Wii game system’s “Miis” — on-screen representations of yourself — that interact with trainers and other virtual characters. Sensors in the Balance Board detect a user’s weight, body mass index, balancing skills and positioning during activities, and the Wii Fit program keeps track of this information, providing tips on technique or weight loss. Wii Fit and the Balance Board must be used with the original Wii system, which costs $250.

I’ve grown fond of using Wii Fit and the Balance Board because it holds me accountable for my weight and balance skills. I learned fitness and health tips from a small, animated image of the Balance Board that jumped around on-screen — such as the fact that people who cross their legs while sitting are more likely to have back problems. And after a few days of using the system, I could feel a difference in my muscles.

For those used to 30-to-40-minute workout sessions, the Wii Fit programs may seem lightweight, since activities last for only about three to five minutes each. To unlock longer activities or additional strength-training repetitions, you must first do them a handful of times in their short versions, which can be frustrating. Nintendo says this is designed so that average users don’t feel intimidated, but I felt like some of the activities ended just as I was getting into them. Almost all activities involve actually standing on or touching the board.

Motivation is a key element in the Wii Fit programs. An on-screen graph tracked my progress, and I “stamped” each calendar day to show that I had exercised. Each minute of activity added a point to my Fit Bank, and enough points unlocked new activities; Wii Fit includes over 40 altogether. On-screen instructors demonstrated and joined me during yoga and strength-training exercises, congratulating me when I held my balance or noting that I stopped mid-exercise.

A daily body test measured my weight and body mass index against those from previous days and challenged me to two short balance tests, which changed daily. After, I was told my Wii Fit Age, a number reached using my actual age, BMI and performance on the balance tests. On good days this number was a couple of years below my real age, but it drifted upward when I was given harder tests, sometimes reaching 13 years older than my actual age.

Top: Wii Fit charts fitness progress over time, including body mass index and weight. Yoga (middle) and balance games like Ski Slalom (bottom) mirror board movements.

More than one person can use the system and profiles can be password protected. Friends can use the Balance Board under someone else’s profile; the system notices weight changes and confirms that it’s alright to continue.

The Balance Board measures roughly the size of a step used in step aerobics classes, and uses the same technology that gauges the weight of airplanes. These sensors expand and contract when someone stands on the board, measuring weight, and where and how that weight is shifting on the board. This works out of the box with four included AA batteries. Its power button can be nudged on with a foot, turning off automatically after five minutes of non-use.

I started with basic yoga, attempting the half-moon pose. I opted for a male instructor who told me that this position helped improve posture and digestion. He briefly demonstrated the position, and we got started on the actual session, which lasted two minutes. A large, on-screen circle that expanded and contracted illustrated when I should inhale and exhale as I held positions. I tried the Warrior, Tree and Sun Salutation positions throughout the week.

In the strength-training section of the program, I liked the Single-Leg Stretch exercise, which involved standing on the Balance Board on one leg and holding the other leg off the ground, bent up toward my chest. I slowly extended this bent leg out and in, while moving my arms and trying to maintain my center of balance. This exercise started at six repetitions, but increased to 10 reps as I improved; 20 reps are the maximum.

I tried the Torso Twists and Rowing Squats, but had a lot of trouble with Push Ups and Side Planks (modified push-ups), because I’m not good at push-ups. To my surprise, my trainer didn’t notice when I couldn’t finish the session. I got my best score on that exercise, clearly a flaw in the system.

During yoga and strength-training exercises, an on-screen red dot marked where my center of balance was detected, and I was encouraged to try to keep that dot within a highlighted area. After the exercise, a diagram showed where my weight had shifted, and I earned better rankings when I distributed weight evenly.

Aerobics were more fun, including hula hooping. I rotated my hips and I leaned forward so that my on-screen cartoon self could catch hoops thrown over my head by other characters. The Balance Board tracked the number of times I rotated my waist around in a circle. One aerobics activity that didn’t use the board was Basic Run, which requires users to put the Wii remote in a pocket or hold it while running in place for time intervals measuring three, five or 10 minutes depending on the pace. This mode is designed so users can either watch other runners on-screen or tune into television while running as Wii Fit tracks your progress. An aerobics activity called Basic Step was like Dance Dance Revolution: on-screen footprints showed where and how to step next — on and off the board.

Balance Games were fun — but hard. I tried a bunch, including Soccer Heading (where you pretend you’re the goalie), Ski Slalom and Tightrope Walk, and was surprised by the sensitivity of the Balance Board. But the more I played, the better I became at controlling my balance.

I brought the Wii and Balance Board with me to my parents’ house last weekend, but most people will do best to keep this board in one place since it weighs 10 pounds.

When I stepped onto the Balance Board at my parents’ house in a room with wall-to-wall carpeting, the system thought I had lost 13.4 pounds since the day before. I stepped off and tried this measurement again a few minutes later, but was told I lost another 4.6 pounds. However, when I returned to my own home with the board on an area rug on hardwood flooring, the system showed I “gained” 16.1 pounds. My weight at my own house was on the mark.

Some of my relatives jokingly saw this instant weight loss as a reason to buy a Balance Board, but this made me question the system’s accuracy.

Nintendo solved the mystery: The carpeting in my parents’ house, which I mistakenly thought was similar to the area rug in my house, must have been touching the bottom of the board, therefore transferring my weight onto the carpet and away from the board. Four circular “feet” come with the Balance Board to elevate it, solving the problem.

When the Wii Fit system thought I lost or gained a lot of weight in one day, it was concerned and offered tips for healthier fitness. In the case of the supposed weight gain, I was asked to think about why I might have gained weight, then had to select an answer from a list of reasons why, including Late Dinners, Night Snacking and Not Exercising. The system gave health tips related to the reasons.

Users’ outside exercise can be accounted for in the system. I added the time I spend playing tennis each week and this information plugged into a graph to illustrate fitness activity over time.

The idea of having a virtual trainer and a way to set weight-loss goals while tracking progress could be truly valuable for people in need of motivation without the expense and/or hassle of going to a gym. If you’re looking for a fun way to get in shape, the Balance Board will do the trick. Like the Wii, its activities encourage all sorts of people to use it, marking yet another smart move from Nintendo.

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Even people utterly uninterested in videogames know by now that two new game machines have arrived this month to lure holiday shopping dollars out of consumers’ wallets. One is the long-anticipated PlayStation 3 from the videogame leader, Sony Corp. The other is the more obscure Wii, from the videogame pioneer, Nintendo Co. Both are going up against the year-old Xbox 360 from Microsoft Corp.

Like the Xbox, the PS3 and the Wii bear little resemblance to the toylike game consoles of the 1980s and 1990s. They are powerful computers that have been optimized for graphics and sound. And, like the Xbox, the two new contenders can handle multimedia and can connect to the Internet.

We’ve been testing the two newcomers, with help from four volunteers, three men and a woman, all in their 20s, most of whom have extensive game-playing experience. We tried a selection of games for each.

Sony’s PlayStation 3 (left) and Nintendo’s Wii (right).

These two new game machines couldn’t be more different. The PlayStation 3 is a bulky, shiny black box that costs $600, or $500 for a somewhat stripped-down model. That’s up to $200 more than the Xbox 360, and about what you’d spend on a basic Windows computer. The PS3 includes a hard disk, a networking port, Wi-Fi wireless networking, and playback of DVDs and CDs. It produces high-definition video. In fact, the PS3 can also play a next-generation, high-definition movie disk, called Blu-ray.

The Wii is a small, thin white box that costs just $250 and has much wimpier specs than the Sony. It does have Wi-Fi, but it lacks a hard disk, a networking port, and the ability to play DVDs or CDs, let alone Blu-ray disks. It cannot produce high-definition video. It has fewer ports and connectors.

Yet, in our tests, we found the more modest Wii to be the more exciting, fun and satisfying of the two new game machines. We and our four volunteer testers were impressed by the rich, realistic graphics and intricate game play in some of the half-dozen PS3 games we tried. By contrast, we all agreed that the graphics on the Wii ranged from dated to cheesy.

But the Wii won our hearts for one reason: It uses a wireless controller that can detect your arm and hand motions and transfer them to the screen, so that you can physically control the action. This opens up huge possibilities. In sports games, you can actually swing a baseball bat or tennis racket or golf club. In adventure games, you can slash a sword through the air or throw a punch. You make pretty much the same motions, using your full arm and hand, that you’d make with the real objects.

With the Wii, you don’t sit on the couch and just press buttons. You typically stand. You get a workout. In fact the Wii controller, a slim rectangular gadget that looks like a TV remote control, has a wrist strap to prevent it from being hurled across the room while you are, say, serving in tennis. The controller also has a small built-in speaker and it transmits vibrations to make the play more realistic. There are already reports of people complaining of sore elbows and wrists from hours of Wii play. Our testers were initially amazed that they felt a little winded and sore after hours in front of the Wii.

To show off these capabilities, every Wii comes with a free disk called Wii Sports that includes simple, basic sports games — tennis, baseball, golf, bowling, and boxing. These aren’t fully realized games; they are more like demonstrations. The graphics are crude and the games lack multiple levels of difficulty. But they are terrific fun. One of our testers, a college athlete who is bored by standard videogames, said they gave her the first opportunity ever to feel successful at a videogame.

We assume some clever game developer can produce more sophisticated versions of these sports games, and of other types of games that make full use of the Wii controller. There are also likely to be specialized controllers that can take advantage of the Wii’s motion sensitivity.

The PS3’s controller, which resembles the one on the previous-generation PlayStation 2, also has some motion sensitivity. But it seems much more limited, and the controller doesn’t vibrate.

The two products are clearly aimed at different audiences. While the PS3 has a lot of multimedia features, it is really for hard-core gamers with deep pockets (or with parents with deep pockets) — the folks who spend days mastering all the levels and secrets of a complex game.

The Wii is for casual game players, including younger kids and older adults who find the complexity and finger skills required for the PlayStation and Xbox to be intimidating. Even adventure games and racing games on the Wii seem easier to get into than similar titles on the PS3.

Left: Two people seen standing while they use the Nintendo Wii’s motion-sensor remotes to play games. Right: Screen views of a Wii tennis match show on-screen players mimicking motions of the wireless controllers.

In addition to Wii Sports, we tested and enjoyed two other Wii titles — “The Legend of Zelda: Twilight Princess,” an adventure game; and “Excite Truck,” a driving game. In the former, the controller can be swung like a sword. In the latter, you can move it to steer. We also ran a simple slideshow on the Wii by inserting a memory card from a digital camera.

The Wii can also play a selection of older Nintendo games, such as Super Mario and Donkey Kong. You have to buy and download these from the online Wii shop. But we were disappointed that they require the purchase of an extra, old-style controller, which we couldn’t find in either of our local Best Buy or Circuit City stores.

The Wii also has a fun system for creating avatars you can use to represent yourself in various games. They are called “Miis” and you can assign them a wide range of facial features.

The PS3 has some impressive features. All six of us were blown away by the graphics on PS3 titles like “Genji: Days of the Blade,” an action-adventure game set in old Japan; and “Ridge Racer 7,” a car-racing game. We enjoyed the skateboarding game “Tony Hawk’s Project 8,” including the use of the PlayStation controller’s limited-motion sensitivity — though the graphics in that game were much cruder than in the other two.

We also were impressed by the photo slideshow feature on the PS3, which turned photos on a camera memory card we inserted into sharp, vibrant images of snapshot prints fluttering on the screen.

We also watched a high-definition movie on a Blu-ray disk and thought it looked and sounded good.

But none of us felt that the game graphics, or the Blu-ray movie playback, were superior enough to the Xbox 360’s graphics and DVD playback, to justify the PS3’s heftier price. None of our four volunteer testers said they’d buy the PS3 at $600. (The $500 model of the PS3 seemed a bad bargain because it lacks Wi-Fi, which is needed in most homes to connect to the Internet for online game playing.)

In fact, the PS3’s graphics, while better in some cases than what we’d seen on the Xbox, weren’t knock-your-socks-off better. And, to really get the most out of a PS3, especially its Blu-ray disk feature, you need a high-definition TV.

In addition, there were some annoying lapses on the PS3. Setup was long and complicated. Load times for games and for levels within games were slow. Typing is tedious, using an onscreen representation of a cellphone keypad (though you can attach a computer keyboard if you have one.) Just registering for the Internet features seemed to take an eternity.

Plus, the PS3’s wireless controller was a pain. In our tests, it often ran out of juice and had to be plugged in to be recharged. Once plugged in, we were always accidentally disconnecting it, because the cable was too short.

Speaking of cables, they may cost you a bundle on a PS3. It comes with a new-style high-definition connector, called an HDMI jack, that provides the best video on a high-definition TV. But it lacks an HDMI cable, an accessory that can easily cost $100.

For mainstream users, who lack the skill or patience or interest for complex videogames, the Wii is the way to go. For hard-core gamers, the PS3 will be the one you want, but only if you are willing to part with a lot of money.

Write to MossbergSolution@wsj.com