Snake Rattle 'n' Roll
One of the early hits by Rare (Donkey Kong Country, Sea of Thieves), Snake Rattle 'n' Roll contains many of the elements of the developer's work that are still celebrated today. This isometric platformer is hard, full of collectables, and was way ahead of its time with its use of 3D environments on the NES. If you missed out in 1990, it's available in the Rare Replay collection for Xbox One.