Saw it on Amazon. there is actually a 256GB micro SD card from Samsung. but you may have to break a leg or a bank to buy it. https://www.amazon.com/gp/aw/d/B01G7L03OS it's yours only for $229.99. It's very new. Samsung EVO Select Micro SDXC Memory Card, 256GB, 95MB/s. i think the new 3DS should handle it if you format it in FAT32,however i heard some problems with cards 128GB and above. so,i really won't recommend it,also it's very expensive and cost more than two 64GB PS Vita memory.