Can a 3ds game be played on a des or dsi?
3DS games can only be played on the Nintendo 3DS(XL) and 2DS. Therefore, Nintendo DS and DSi cannot play 3DS games
If they were specially designed for the 3DS, no. There is a small tab jutting out of the side of 3DS games making them unplayable on a DSi. Even if you could fit the cards into a DSi, they would not work because they use 3D technology the DSi cannot utilize. DSi games will be playable on the 3DS though.