If it was 10 years ago, when I was still into pokemon...I probably still would've chosen Legend of Zelda. lol
Haven't seen much on DarkSiders, so I have no opinion there.
Definitely Zelda Dungeon. Back in the day, it was just zelda dungeon, didn't even know there was a pokemon dungeon. Pokemon is somewhat close though, although I don't play pokemon that much compared to zelda xD
I prefer Zelda Dungeon since Zelda is my favorite video game serie and I know NOTHING of Darksiders,if fact if it wasn't of Darksiders Dungeon I would have never known of that game's very existance.