MODDEDbyME said:
look up R4-Ds its a ds cartridge that accepts micro sd cards and you can run games movies emulators and all of that stuff on it check it out.
See kids, this is what happens when you don't read the thread.
Regardless, for the love of all things good, DO NOT GET AN R4 GOD Dang IT. Not only is it outdated Chinese crap, but its not even produced anymore afaik. The R4s you see out now are flux clones of the original. You might get lucky and get one which is actually improved (or a clone of a better card re-branded as an R4 clone), but its stupid to take that risk when there are so many better choices. People just happen to associate all DS flash carts with R4s, instead of actually researching the subject for like 15 min. Get an AceKard 2/2i with AKAIO, and you won't have to worry about patching your ROMs or any work-arounds to make a new game work, if they work at all on an R4.