The NES in Europe was considered a failure. This was down to the decisions made by Mattel, as their decisions in where it was released and cost of games was very prohibitive. Nintendo couldn't recover from the damage caused.
Crystalis was an RPG game released for the NES. It was released in 1990 by SNK. This is an interesting release, as it falls in the same category as the likes of Final Fantasy and Legend of Zelda, but does this a lot differently. It would be released in the year 2000 on the GBA.
The plot for Crystalis revolves around the thermo-nuclear apocalypse. The player awakens from hypersleep to find the planet irradiated and a wasteland. The player then sets out to collect four elemental swords that can save the planet. Pretty standard RPG storyline, but it does so with that classic SNK twist.