Some can be downloaded via the wii shopping channel (for a price), or they can be played via an emulator on modded wiis.
You can only play wii games, and game cube games on a wii, unless you have the wii shop channel or the hombrew channel, then you can play others like nes, snes, Nintendo 64, Nintendo ds, ect.
No
All gamecube games should work for the Nintendo wii.
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
No
NES, SNES, GBA, Gamecube, Nintendo DS, and Wii
You can only play ones that have been released on the wii virtual console, the wii itself has no slot for a NES game.
no
There is no Nintendo console that plays cartridges from all 3 of those console's games. However, you can download games from all three of those consoles from the Wii's Wii Shop Channel.
no
not some games but some games do
Only Wii discs and Nintendo GameCube discs will work on the Wii