If you haven’t already, you should pick up Legend of Grimrock. It’s an amazing indie game that captures the dungeon crawl feeling. My only issue with it was the level cap and that you were sort of forced down a single skill path because of it (especially for rogues).
In the fall the devs released a toolkit to allow players to build their own dungeon sets. Well, an enterprising group managed to re-create the entire main quest line and add piles of tweaks to the journey. Master Quest allow you to level up to 30+, gives items more worth, a slightly different layout and replayability.
Considering you can get the game for 10$, which is less than the price of most DLC today, you’d be doing yourself a favor giving it a shot. I know I’m going for another few runs through!