How about Hexen. I think I may be the only person on the planet who played and loved it. I still have the artifact locations memorized to this day.
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He who fights with monsters should be careful lest he thereby become a monster. And if thou gaze long into an abyss, the abyss will also gaze into thee. - Friedrich Nietzsche
Joined: 4-May 13
From: Somewhere between here and there
There is another whole subset of these. The ones that I used to spend countless dollars worth of quarters on at a place called Funland in Panama City Beach, Florida when I was a teenager.
Space Invaders, Asteroids, Defender, Pac Man, Galaxian, and so many more...
Perhaps one that begins by interviewing the player and asking what they want. Then the game responds to create such a game - that it can also adjust in progress to suit your taste. Perhaps a game where you can choose the game's venue/level of magicks/technology and mechanics. Where there are quests and events, but they don't necessarily involve your character.