Can you play regular Nintendo DS and Nintendo 3DS games on Nintendo 2DS?

Yes, the Nintendo 3DS family can play Nintendo DS and Nintendo DSi games. However, some games that require the GBA slot (Guitar Hero) will not work for the Nintendo 3DS.

The Nintendo 3DS family includes:
- Nintendo 3DS
- Nintendo 3DS XL (LL)
- Nintendo 2DS
- New Nintendo 3DS
- New Nintendo 3DS XL (LL)