The Biggest Loser is not really a
game, per se; it's an application. Specifically, it's an application intended to help you lose weight through education, awareness and introspection. There are different types of activities in
The Biggest Loser. The primary part of the game is the
Biggest Loser Challenge, in which you select a 4, 8 or 12 week program and the program tracks your progress, including accomplishments such as "Lost a pound", "Completed a week of the challenge" or "Scored 10/10 on a quiz." Each time you log in, you are prompted to enter your weight.
You also get explanations for how to perform several exercises and the ability to select from pre-existing workout routines or even create your own exercise routines by mixing and matching exercises of different types (Warm-Up, Upper Body, Lower Body, Core, Cardio and Cooldown). This comes in handy, for example, if you are traveling and don't have access to exercise equipment; you can create a routine composed of exercises that don't require any equipment that you don't have.
The Biggest Loser also includes a Healthy Eating Handbook, which includes information on making healthy choices, quick tips from the contestants of The Biggest Loser, a cookbook, calculators for determining your Body Mass Index (BMI), Basal Metaboli Rate (BMR) and your suggested caloric intake), a calorie counter and quizzes to help sharpen your healthy eating information.
One of the features of The Biggest Loser which serves only as entertainment (and, in my opinion, only marginally) is where you can take a picture of yourself with the DSi's camera and use it to replace the face of one of the Biggest Loser contestants with your own. This isn't a game, but it can be amusing, I suppose. I might be more amused with this feature if I was a bigger fan of The Biggest Loser.