Why has there never been a major dark "Dungeon Crawl" type movie?

Just take the rudimentary plot of a diverse group of warriors who, by chance or circumstance, who meet up and decide to go on a quest, which involves either a literal dungeon or some subterranean area like such, to fetch some object (which could have world-changing qualities); have the villain basically be a Mage or some sort of powerful evil villain; in the meantime, have fight scenes with zombies, orcs, etc.

Basically, why has no one ever really attempted to make a D&D adventure into a movie?

Possibly because the Dungeons & Dragons movie (2000), was a critical and financial flop.

Wikipedia article: Dungeons & Dragons (2000 film) - Wikipedia

Something like this?

The Lara Croft movies were pretty dungeon-crawly.

As are various segments from various Indiana Jones movies. Personally, I recommend the OP check youtube for Korgoth of Barbaria.

Here ya go.

Ddamn; that looks great! Thanks, Miller!

As Above So Below is a horror film that might generally meet your criteria.

Krull was pretty mind-bendingly bad.

The Seven Samurai, not so bad.

Big Trouble in Little China was awesome.

Raiders of the Lost Ark was basically a long sequence of dungeon crawls and fetch quests. Indiana Jones even joined up with his co-star in a tavern.

The Goonies seems like it’d also qualify, though with the fantasy dialed way back.

The thing is while the movies you guys have mentioned were great, none of them took place in a high-dark medieval fantasy setting. Indiana Jones and the Goonies have aspects of a dungeon crawl, but take place in our world with only fantastic flourishes.

Trailer says spring 2017, but imdb says still in production. Aug 6 update says “Wrapping up final touches”

Brian

There’s also this, which is maybe taking the OP too literally. Still a lot of fun, though.

Conan the Barbarian
Conan the Other Movie
Willow
The Hobbit

Outpost (2008) actually seems to fit the requirements quite well…aside from being set in the modern day.

An even better fit, although not a movie, would be Record of Lodoss War. Which was, in fact, literally born as an adaptation of a transcript of an RPG campaign.

Conan the Destroyer.

That looks more like a monster story set in a mine.

So are most dungeon crawls.

What, the whole movie is just a dungeon crawl?

If you’re already making a fantasy movie, why would you not want to show castles and rugged mountains and enchanted forests and men on horseback? Why stick the whole movie underground?