It depends on which Nintendo console you are referring to.
Nintendo 3DS games can only be played on the Nintendo 3DS, Nintendo 3DS XL and Nintendo 2DS.
All other Nintendo consoles including the Nintendo DS and Nintendo DSi cannot play Nintendo 3DS games.
You play 3DS games on a 3DS, not on a computer.
Nintendo 3DS games are only playable on Nintendo 3DS systems, and in order to play Nintendo 3DS games multiplayer, you require multiple Nintendo 3DS systems. However, Nintendo DS and DSiWare games that support multiplayer can be played using the Nintendo 3DS system.
No, only a 3DS can play 3DS games.
you cannot listen to music online from the 3DS
you can't. But you can get a demo on nintendo dogs + cats on 3DS
yes
Of course. The 3DS XL is just bigger. It can still play normal DS and 3DS games.
you can play with them on the 3DS.
No, the 3DS is region locked.
Online,you could get a emulator to play it.Or, if you have a Nintendo 3DS,you could download it.
No, the Nintendo DS lite cannot play 3DS games.
The Nintendo 3DS is a handhelp, the Xbox 360 isnt. You can not say whats best. If you like the all online play and get graphics, Xbox 360 is the way to go. The Nintendo 3DS can be took and played anywhere.