That is because the Nintendo Wii U is a newer generation of
gaming console for Nintendo. Therefore, the Nintendo Wii cannot
play Nintendo Wii U games
Yes, the Wii U can play Wii games
No, the original Wii will not play Nintendo Wii U games
No the Wii cannot play Wii U games
No, the Wii cannot play Wii U games
No, Wii U games will not work on the original Wii
Yes, Wii games will work on a Wii U. You can also transfer any save data and downloaded content form the Wii to the Wii U.
Yes, the Wii U is backwards compatible and can play Wii games
Yes, you can play Wii games on the Nintendo Wii U
You can use any Wii games or Wii U games and software. Wii U games don't work on Wii, however, and the Wii games require the TV screen.
No, the original Wii cannot play Wii U games
No, Wii U games cannot be played on the original Wii
Yes, the Wii U is backwards compatible
No Wii U games will work on the Wii.
Yes, the Wii U is backwards compatible with Wii titles. (It cannot, however, read/play Gamecube games.)