It has dsware (dsi games), but you cant buy wii games for the 3ds
That would probably be ninjabread man for wii or flashlight for DSware. They suck. Oh and jenga for wii.
On the Wii Shop Channel there is a downloadable channel called the Nintendo Channel. There is DSware that players can download from this channel onto there Nintendo DS's with Wii points.
It will take normal NDS cartridges, DSWare games (bought off Nintendo Shop Channel [formally known as Wii Shop Channel.]) It will drop backwards compatibility with GBA games, making games like Guitar Hero On Tour unplayable.
E.T on the Atari hell yeah it sucks that game can suck my 15 inch penis