Yes, they will since the 3DS XL is a 3DS.
Yes, the 3DS XL can play Nintendo 3DS games
Yes, the Nintendo 3DS (as well as the 3DS XL and 2dS) has its own 3DS games that will not work for the Nintendo DS, Nintendo DS Lite, Nintendo DSi, and Nintendo DSi XL.
Yes, the 3DS are backwards compatible.
No, 3DS games only work on the 3DS and 3DS XL as well as the 2DS
3DS games cannot be played on a DS lite. You need a console from the 3DS family - 3DS, 3DS XL, 2DS, New 3DS, New 3DS XL.
No, 3DS games only work in a 3DS or 3DS XL.
There are no such things as '3DS XL' games. An XL is just a larger 3DS, nothing more.
Yes and no.The games you are able to play in your DS XL can also be played in your 3DS, but they will not be in 3D. The 3DS games can only be played in your 3DS, and not in your DS XL (or any previous model) at all.
The 3DS XL is not one of the prizes on Club Nintendo. You cannot get a 3DS XL from Club Nintendo.
Pokemon Omega Ruby and Alpha Sapphire is a Nintendo 3DS game that can be played on any of the Nintendo 3DS Family Consoles and those are: Nintendo 2DS, Nintendo 3DS, Nintendo 3DS XL, and New Nintendo 3DS XL.
Yes, the Nintendo 3DS LL is the Japanese name for the Nintendo 3DS XL
Yes the Nintendo 3ds xl does have a camera.