Has this feature been used in forever (outside of Pokémon and Guitar Hero, that is)?
Now, granted, I *know* the DSi/DSiXL doesn't have a GBA slot and that *could* have something to do with it.
I've been playing Wario Ware: DIY and enjoying it. To me, this seems like the *perfect* game to add something when you have one of the GBA titles (Twisted or the original Mega Micro Game$) in the GBA slot. Even if it's just a record, comic, or some sprite work. But *nothing*.
How sad.
