UNDERTALE

[StarSock64]

I feel like the plain art style lends to the personal and quaint tone of the game's writing. I think if it was flashier it wouldn't feel nearly as genuine and that would be a huge drawback from the game's appeal.

I don't find it "NES nostalgic" so much as "home-made old RPG maker game" nostalgic, and that home-made feeling is practically necessary for the game to accomplish what it does in the story.