There are a gazillion download sites online where you can download Wii games but only a few are reliable. Where do you find these trusted sites?

One game for example:

Wii Fit Plus is an enhanced version of Wii Fit; it’s the original game with some added exercises and mini-games, and when Nintendo starts selling Wii Fit Plus, they will no longer sell the original. Nintendo didn’t show me any of the new exercises, but I did get a quick look at the mini-games. Of the ones I saw demoed, the most interesting is one in which you fly.

If you want to play downloaded wii games on you Nintendo, you have to make sure to get them from reliable sites or else something bad might happen to your Wii.