If you have downloaded a game to your Wii console, but have since deleted it or otherwise lost it, you can re-download it:

1. Access the Wii Shop Channel (how to).

2. Select "Start Shopping" and choose "Virtual Console."

3. Browse through the available titles to find the game you need to re-download.

4. Select "Download" to download the game again.

As long as you are using the same Wii console you used to originally download the game, you will be able to re-download it should the game be lost or deleted.