I found something interesting today about 3DS. This is from Nintendo Life with title Nintendo has 3D Demos of Wii Sports and Super Mario Galaxy:
3DS hardware head Hideki Konno spoke to Kotaku about the experiments the company went through to convince sceptics of how the machine would make games better, starting with a series of 3D games on Nintendo Wii.
- We took a special LCD screen and hooked it up to a Wii. We were able to play Mario Kart Wii on a 3D screen and we were also able to do a number of other experiments, again, sort of exploring the potential of how it could affect gameplay. For example we worked with Animal Crossing, Super Mario Galaxy and Wii Sports as well.
There's some more but not gonna put all in here. This is all that I think is important enough :D