That is the Boot partition you are seeing. All the game files are stored in the main partition. Try to eject the sd card and reinsert or try another card reader.
Yes, Windows doesn't read this device's Unix filesystem like a Linux or Mac computer can. I suggest a linux VM like VirtualBox for handling data on this card if you only have a Windows PC.
got mine today as well got it from aliexpress for a bit under $30 and it came with a 32gb card.pro tip: the screen protector thingy foil on the screen is pretty thick and probably not supposed to be peeled off... whoops loving the cfw progress, Jutleys!
It's a pretty cool little device, I've been enjoying it quite a bit. I'm using PocketGo.V1.3.2 firmware on it. Is there new firmware for it???