Things You'll Need
Instructions
Verify that the game you want to link between your DSi and Wii is compatible with both gaming units. This information can be found in the owner's manual.
Turn off your Nintendo DSi and power on the Nintendo Wii.
Insert the game disc into the Wii console and start the game.
Choose "Transfer to DS" or "Download from DS" to transfer your game data between the two devices.
Power your Nintendo DSi back on and insert the appropriate game cartridge. Your DSi will give you instructions on how to play the game on both devices. These instructions will vary, depending on the game you are playing.