Winter!: Prepare for holiday gaming!
I sorely wish this game had spawned a genre.
I spent an awfully large chunk of my formative years lost in the many kilometer long depths of its dungeons, and emerged several years later with a well honed sense of direction and spatial relationships.
Other games might have added more depth to the roleplaying genre, but no game before or after has managed to capture Daggerfall's breadth.
Game Traits applied to The Elder Scrolls: Chapter 2 -- Daggerfall (PC) by eldritchreality