There are so many fun and creative world/level ideas in Super Mario Land 2: a toy world, a moon world etc etc. And the final boss is really cool as well, although the difficulty spikes a lot more than it should in the final level. Definitely one of the best 2D Marios nevertheless.
Photo Dojo is a lot more fun than it has any right to be. I laughed my ass off so many times after turning my friends into fighters. And recording voice lines was even better. It's a genius idea and the fact that you can play multiplayer on a single DS just adds to the enjoyment!
The best 3D Classics game. Great remake of a great game. Seriously, Kirby's Adventure introduced copy mechanics, aka the one thing Kirby is known for! The difficulty spike at the final boss was too much for me to handle though :/