To give you an idea of what I am talking about, regarding the cards used in Dungeoneer, here is a sample of the dungeon cards that are in the Tomb of the Lich Lord set.
I have not put them together properly (I think there are a couple of doorways that are illegally configured) but it gives you an idea of how nice these cards really are.
The cards themselves are your standard playing card size, so you need some room on a table to set up the dungeon. You also need room for the various decks that you draw from, and for the cards that you place in front of you, while you play the game. But it requires no more room that you would need for any other boardgame you might play.
Unlike Deathmaze, Dungeoneer is a competitive game. You are competing with the other players to complete your quests before they do, and you play monsters and other cards against them, to stop them from achieving their goals.