Someone commented that early on, the game was pretty much about dungeon crawls. This might be true if you only ever played D&D, and only played published adventures. I started gaming in 1980, and games even then were about so much more than that. However, I'm not dismissive of dungeon crawls. i see them simply as a special case of exploration: whether you're playing a fantasy game, a sci-fi game, or a 1920s horror game, sooner or later you'll find yourself in a building, cave system, or open area that you need to explore for danger or reward. That's all a dungeon crawl is. Obviously, D&D with its elaborate magic system and wide variety of monsters and traps crammed into the same area leads to convoluted dungeons which are often ridiculously unbelievable, but that's part of the charm of that game. So, i think most games have dungeons in some form (a place to search for some reward, while trying not to be discovered or killed), and there's a place in any game for that kind of thing. It's more fun for me if they are tied into the setting and adventure, and have a reason to exist. I agree with Stan's point above about the very bad design of typical D&D dungeons. But if I'm playing D&D and the GM unleashes that kind of dungeon on me, while it's not my preferred choice, I'm not going to complain. It's a good source of XP!