Top 10 Favorites:
1. Donkey Kong Country 3: Dixie Kong's Double Trouble
2. Donkey Kong Country 2: Diddy's Kong Quest
3. Super Mario World 2: Yoshi's Island
4. Donkey Kong Country
5. Super Mario World
6. Super Mario Bros. 2
7. Yoshi's Woolly World
8. Donkey Kong Country: Tropical Freeze
9. Kirby's Epic Yarn
10. Chip n Dale's Rescue Rangers
I'm not sure I have any least favorites.