So I've been wanting to get one of the chips to mod my DS but I'm not sure what. I was thinking of the M3 DS simply but I do have some questions before I go ahead and purchase it. Can you play backed up GBA games as well as DS? If not, is there any way to play both GBA and DS games with something else? Can you back up more than one DS game at a time on a card? As in, can you load say 2 then you pick one or the other and play it? Or do you have to load one at a time on the card and if you wanna play another game you have to either have another card with your backup, or if you have one card then you have to delete it off it and load the other one onto it. Anyone who can answer is awesome!