Which video game do you think is most deserving of a sequel that never received one?
My pick has to be Crystalis for the NES. Such an amazing action-RPG for the time. It played similar to Legend of Zelda, but it had more RPG-elements involved such as an experience, and level-up system, as well as a magic-system. It also had better graphics, better music, a larger world, and more towns & NPCs to interact with. I daresay it was better than the original Legend of Zelda.
But unfortunately, SNK decided to focus on fighting games shortly after it's release and we never saw a much-deserved sequel to this NES gem. Seriously one of the best games on the NES and deserves to be in every NES gamer's collection.
What game is your pick for most deserving of a sequel?