Yes, think of the DSiware games, people!!
I hope that all dsiware games were dumped. There are a lot of hidden gems and possible lost media there. Including some of historical significance, like an unexplained sequel to X.
As of 4 years ago when I was searching, I found it very difficult to find DSiware game Roms online. Many relegate it to cheap mobile trash or don’t think of it much at all because of how briefly they were produced and how narrow the DSi install base was, but the experimental nature of it all, the late 2D gaming, low budget, yet non-apple-store-iness of it all is a perfect storm for some real unique stuff. On my 3DS I had a few installed— of the lesser known ones I have a Kappa game.
Since then there’s been several major breakthroughs in DSi homebrew, but still a long path ahead, since again it is a very overlooked console… yet… so cool. I think it’s way cooler than what 3DS ended up being, entirely because it was 100% more 2D graphics, and 3ds let me down in that regard almost entirely.
I’ll be the first to say it: the DSi is the Wonderswan of that generation. A wonderful Swan Song for 2D portable gaming. I don’t even know half the library 😂 I need to find a complete dumped multi region library of DSiWare and comb through several times. I doubt it exists, I doubt every game has been dumped.