For anyone who is interested in playing homebrew games, I would definitely recommend that they give Anguna a try. It's an interesting dungeon crawler style RPG very similar to The Legend of Zelda type games. Both the GBA and DS versions seem to be the same overall with only a few differences in gameplay. I personally prefer the more classic retro feel of the GBA version, but both are fine. Make sure to look everywhere and collect any useful items you find. They will be needed latter on.