The Nintendo 3DS (or short 3DS) is a mobile gaming console build by Nintendo and features two screens, one of which provides a three dimensional effect without the use of 3D glasses. It was first introduced in 2011. A slightly bigger redesign, the Nintendo 3DS XL followed on year later.
The 3DS is compatible with games written for the Nintendo DS, although with no 3D effects.
Tomb Raider Games for DS
As of now there are no Tomb Raider Games released specifically for the 3DS. As noted above, the games for the DS are compatible, though.