5. Ice Age Valley - Donkey Kong Country
The game that reannounced Donkey Kong as a hero, and a marketable character, reinventing the great ape and launching a brand new franchise that boasted wonderfully designed levels and bags of charm. Hardly the hardest game on the market, but still a very rewarding experience that was at its best in the more complex levels and worlds like Gorilla Glacier. This level within that world is probably the best of the bunch - though they are all great - with harsh weather conditions throwing visual curve-balls and making everything that little bit more tricky.