Link's Awakening and Mario Golf are both fantastic GBC games. I highly recommend them.
Mega Man 1 and Ninja Gaiden are also excellent platformers. --- For those players who don't speak Australian, we have provided an English translation of the previous scene. Do you want to replay the scene?
Gunman Clive Despite its short length, it's definitely a perfect buy, especially at $1.99.
Cave Story (3DS Ware) Just another port with the latest additions added...regardless, it's a safe buy.
3D Classics: TwinBee The most fun shmup I played on the 3DS.
Game Boy Donkey Kong It's both the best Mario game and best Donkey Kong game I played on my Game Boy, and this one is still good to its age, even today. --- Awaiting for Paper Mario, Final Fantasy (Classic style), Kirby, Donkey Kong, Fire Emblem, and Mario Sports Mix successor on Wii U...
Gunman Clive for the reasons mentioned in the post before mine.
Denpa Men is a simple but fun and lengthy RPG, though you might want to just wait for the sequel if it's being localized.
Unchained Blades is fantastic, but more of a full retail game (including price) so maybe it isn't what you're looking for.
Pushmo/Crashmo can eat up hours and the replayability is infinite thanks to the QR codes.
And lastly, Mutant Mudds is a wonderful 2D sidescroller with retro graphics and plenty to do. --- Currently Playing: Unchained Blades, Phoenix Wright 3, Denpa Men 3DS Info: Jake - 4167-4549-4028 (Feel free to add me, message to be added back!)