After the fiasco that was Fitness Ultimatum 2009, you might be hesitant to buy the 2010 version. I was too. I've had the game for a while now and thought I'd break out the good and the bad.
The Good:
1) The exercises are definitely more intense than the ones you'll find on games like Wii Fit Plus or EA Sports Active. There's are nine exercises that use the Wii Remote (water pump, sledge swing, hip twist, oblique, side lunge, back kick, jumping jack, squat jacks, running) and nine that use the balance board (boat pose, crunch, swing kick, lunge kick, bicycle, side plank, pelvic thrust, push-up, closed push-up). Use of the balance board is optional.
2) The game is fairly well organized into three main sections:
a. "Workout Area", contains four choices: "Island Overview" allows you to quickly do one of 18 random exercises in one of 9 different environments, ranging from a cascading waterfall to a sunset on a pier. Great for if you want to exercise in a hurry. "Single Exercise" allows you to choose the specific exercise, location, music, and number of reps. "Circuit Training" lets you choose from five combinations of exercises that Jillian herself recommends for Total Body, Abs, upper or lower body. You can also customize five of your own circuits. "Resolutions" allows you to create a customer workout schedule over time for up to six months, or use a schedule that Jillian herself made.
b. "Jillian's Locker" is very obviously something that the programmers stuffed into the game to make it appear more substantial. It isn't substantial at all. "Outfits" contains outfits that you can dress your on-screen Jillian in. More of a gimmick than anything else, and the interface is confusing to navigate. "Diet Tips" and "Exercise Tips" contain a total of 14 one-line tips. Obviously put in here by a programmer in a vain attempt to make the "information" look more substantial.
c. "My Info" is an interesting area where you can set your profile (height, weight, age) and then see your stats (how much you exercised using the game and a chart of your weight loss over time). Overall I actually prefer the more "professional" presentation of this over the cartoony approach of Wii Fit, but again, the user interface is atrocious, with non-intuitive buttons and difficult controls.
3) While you're doing each exercise, the game will show an animated Jillian performing the exercise, showing you exactly how to do the exercise, complete with the Wii-mote or the Balance Board. You can use a 3-D camera to rotate and view exactly how to do it from any angle. This is a neat feature that isn't available on other games.
4) For the Wii, the graphics are not bad. The environments have rich graphical experiences and great background audio. When you're running through the jungle behind Jillian, you really feel like you're there running through a lush jungle. When you're on a dune overlooking a beach, you can see the wind and hear the surf pounding against the shore.
5) There is something cool about having Jillian as your "personal trainer", leading you through intense exercises, shouting out positive and negative reinforcement depending on how you do. The game does capture her intense, all-out style quite well.
The Bad:
1) The game is still extremely spotty in its use of Wii-Mote or Balance Board to measure how well you're doing the exercise. While marginally improved over the 2009 version, it's still not very accurate and a lot of it is "trial and error". In most cases the controller really doesn't add much to the experience and you're on the "honor system" to do the exercise right. Sometimes just flicking the remote lightly will trigger compliments from Jillian; other times you'll swear you're doing the right thing, but Jillian will berate you for not doing it right.
2) For any given exercise, once you press the "Start" button, the on-screen Jillian will start doing the reps for the exercise very rapidly, regardless of whether you are doing them properly or even doing them at all. Sometimes before I even get set, she's finished with the exercise already! Worse, there's no ability to "Restart", your choices are just Pause or Quit.
3) The overall user interface is horrific. There are a number of awkward or non-standard ways that controls and interface elements are programmed. Sometimes navigation through menus is unresponsive, sometimes buttons are so small you can hardly select them.
4) There are a limited number of exercises (9 balance board, 9 Wii-mote). This pales in comparison to the exercises provided in The Biggest Loser.
To sum up? I'd give it 3 stars out of 5. If you're committed to exercising, you'll get some benefit out of this, but there really aren't any huge innovations here. You'll find that Wii Fit Plus is more fun, EA Sports Active is more precise in its controls, and The Biggest Loser for Wii has a much larger variety of equally intense exercises. The main audience for this one are die-hard fans of Jillian Michaels who enjoy her no-hold-barred style and love the idea of her acting as your virtual personal trainer, even at the expense of a very polished video game experience. For the rest of us, the three titles I just mentioned are far better choices.