Wii Fit Wii Software Wii Fit is a game that combines fitness and fun, allowing you to experience a variety of exercises using a balance board. Operation has been confirmed, but because it is an older item, it may not work depending on the condition of the main unit. We do not guarantee operation on all main units, so please be aware of this. Please purchase with the understanding that it is a home-stored item. Please refrain from purchasing if you are sensitive to such things. Long-term home storage.