Last day (or so) for Autarch's moderately sized dungeon Kickstarter

Secrets of the Nethercity which is apparently about 240 rooms, which I would say is just a dungeon

I'm not a fan of ACKS (or rather, I think it's not particularly innovative as it's 90% BECMI with some other stuff that makes the game worse, like the weird to hit system), but really liked their previous module, Sinister Stone of Sakkara, so probably worth a look even if you don't like ACKS.

I also like their ancient inspired setting. I always thought that was a better fit for D&D than medieval feudalism (since that requires a conquered population and dominant church)