Nice project! I have a couple of the Transcend SD-WIFI cards in my studio - one thing that I really like about them, is the Lua-based interface that allows programmatic control, remotely, of the filesystem. This has been quite useful.

Do you have any plans to support similar functionality?

While the Doom stuff seems like it's kinda soulless attempts at e-cred, this is more interesting because 1) it's an old/historical product (SuperCard DSTWO) that was actually in use rather than something someone made recently and 2) it was made with functionality in mind rather than showing off for the sake of it. Specifically it allowed SNES and I think GBA emulation on a system that would normally be way too weak for it. I remember hearing the chip in this flashcart was roughly equivalent to a PSP. I had one back in the 2010s and it remained useful even with a 3DS as for years you couldn't run DS games off the SD card on 3DS, and I think trying to emulate SNES/GBA on 3DS was also not great. Later on this flash cart became less desirable than the more basic DS-only ones because it had a big power draw even when not being actively played (IIRC), so if you left it in your 3DS and played digital 3DS games it was an extra drain.

I will agree, though, with the general Doom sentiment as well as the clickbait title. Seeing the description say it was the SuperCard DSTWO restored my faith.

These days with TWiLightMenu, a DSi or 3DS doesn't have much use for this flashcart, or any other, but it remains useful for a DS Phat/Lite.

f4mi's channel isn't so bad... it's a little click-baity sometimes, but I often get a kick out of Gen-Z's amusement when dealing with technology just before their time.

I also had this flashcard, I remember that the part where the CPU was located would get slightly warm after using it for a while.

It was funny because the CPU was so tall that the cartridge case had a cutout for it, otherwise the case would not close.

There were a lot of cool homebrew games and animations for VMUs too