>>59467If you get twilight menu, you can play any DS game. Pokemon B&W are mindless, but fun.
The remakes for OoT and Majora's Mask are pretty ok, there's a port for Ace Attorney, mystery dungeon was pretty good too, and the GBA metroids held my attention for a while.
If you want to try something for shiggles, my favorite game as a kid on my ds was lego battles. It's a bit more niche and it's not perfect, but I played it for years.