http://cgi.ebay.de/ws/eBayISAPI.dll?ViewItem&item=260720338534 I've just noticed that a few people on Ebay sell NDS pirate carts with hundreds of games on it. That's pretty new to me because I only heard about NDS pirates with just 1 game on the cart. I wonder if these carts really contain 366 games. What do you think?
I imagine not. Most of the multi-cart items I've seen for NES and Gameboy exaggerated the game count significantly, usually by way of minor game variants. Usually a side-scroller would have some oddball sprite substitution but otherwise be the same game. I have a 50-in-1 Famicom pirate cart that really contains only 25 unique games, by way of example.
Sounds like someone just put 366 pirated ROMs on a microSD and sold it with a DS flash card such as R4.
Just pirate cards, usually with some kind of emulator and ROMS to make the bulk of the game count. Stuff like this is easy to find in China.
It sounds pretty likely it's just the same thing as a "R4" or other NDS device that loads off cheap NAND flash. Except that it's preloaded/fixed set of games. It would only make sense that way as it's too expensive to produce a MaskROM or NOR type Flash of that size to store those games. Reminds me of the much cooler NeoGeo multicarts out now.