I use to own Wario Land 4, and that was my favorite game on the GBA. I owned it since I was 5 or 6, but I lost it some time in 2009, so the last time I ever remember playing it was sometime back in October 2008.
But thankfully, it was a free game for the ambassadors on the 3DS and I was able to get it last December. So now, I have it on my 3DS as a downloadable game.
I lost Super Mario 64 DS a few years back. Even if I did still have it, I couldn't play it beacuse A, its probably a fake and B, its region is North America and so it would only work on my DS lite. Which is broken. I got all 150 stars by the way.