My sister bought a pokemon gold version DS game. She tried to play it on her 3DS which went fine until she saved and tried to start the game again, it just shows black if she tries to open the save. Then she returned the used one and bought a new one, and had the same problem. Every other game works fine. Then she tried it on a ds, and the game worked. Then we tried on my 3DS, and that worked too. So it's just her 3DS (which is almost new). Is the 3DS broken? What do you guys suggest?

Please?

I assume you're referring to pokemon heart gold, that sounds like an odd problem, you say other games work on her 3DS? What I suggest is cleaning the connectors in both her 3DS and on the game, it's possible that they're both dirty, but not dirty enough to independently interfere with the connection, beyond that, I recommend contacting Nintendo customer support

...This is probably a stupid question, but have you tried blowing on the cartridge or the 3ds's cartridge slot? That usually works for me.... If not, I agree with the whole customer support thing.

My heart gold works fine on my 3DS. I suggest blowing on the card and slot then if that doesn't work just contact Nintendo. They should fix it for free.

is it only with that game...

Only that game, yes.

Locked in favor of this concurrent thread. :3