R4 its like a pendrive, with him you can download DS roms from the internet and play on the DS,
By:Dan~* Djgreendj: The R4 is a special tool used to download DS games straight from the internet for free. Plus if you have the right software installed you can select cheats for your gameplay! Eg. you download Pokemon Platinum from the net and you can select cheat codes like Unlimited Master Balls or Exp Multiplied by 100. But a word of warning if you select to many cheat codes your game will stuff up.
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No, the R4 for the DS will not work on the DSi
r4
An R4 is basically a mod chip for the Nintendo DS console. You can download games from the internet and put them on your R4 card and play the games on your Nintendo DS.
Not natively, but you can get a flash card such as the R4 that will let you. Google R4 DS
you can use a r4 for ds lites but with dsi's there is a different type of r4 sorry i dont know the name of it