What's 3ds flashcard or flashcart? Flashcard or flashcart for Nintendo 3ds are the 3ds flashcards. They may play ds games like the R4 brand or play 3ds games like the Gateway 3ds, Sky3ds and Stargate 3ds. No matter what name is it, as long as it can be used on Nintendo 3ds firmware console and is produced for running ds or 3ds rom backups, it's the product we call 3ds flashcard or flashcart. According to Games supported by 3ds flashcard, it can be divided into 2 parts, one is r4 3ds card, the other is 3ds game flashcarts. R4 card for 3DS is the flashcard plays Nintendo ds games and homebrews on 3DS system handheld while the 3ds game flashcarts are the cartridges that playing free 3ds roms on all Nintendo 3ds variants. 3ds flashcart or flashcard is with the same size like the original ds or 3ds game card, it should be inserted into the 3ds console slot to work, but before it, you must to download flashcard kernel or firmware to the flashcard. 3ds flashcard isn't...