- F-Zero: Maximum Velocity
- Super Mario Advance 3: Yoshi’s Island
- Legend of Zelda: Minish Cap
- Fire Emblem: The Sacred Stones
- Kirby & The Amazing Mirror
- Mario Kart: Super Circuit
- Mario vs. Donkey Kong
- Metroid Fusion
- Wario Land 4
- WarioWare, Inc.: Mega Microgames
Downloading them is a bit of a non-intuitive process to say the least. I had to remember how I did it with the NES titles. You go into the Nintendo eShop, then to Settings/Other, then Your Downloads. Then scroll down-- what screwed me up was that I had to go to the next page to find the 10 GBA games on my list. Once you find the above titles, tap Redownload, then Download, then it gives you a choice to either Download Now or Download Later. If you pick Download Later, then Continue shopping, you can go through all 10 titles, then close the eShop, close the 3DS (put it into sleep mode) and it will download all the titles while it's closed. if you choose Download Now, you'll have to repeat the process for each game.
Also something to note: You can get the original GBA screen resolution using the same method as for DS games-- hold down either the START or SELECT button (you don't need to use both) while loading the game-- make sure to hold down the button until graphics pop up onscreen. Some games just look much better in their native resolution like Yoshi's Island. Though Kirby looks good using the full 3DS screen, I bet GBA games made later in the GBA lifespan look better in general.....
All these free games, man... there's so much to play and so little time....