Build the dungeon, not the adventurer

In the Guild of Dungeoneering, instead of controlling the adventurer, you build the dungeon–and put in monsters–as they go. It's $10 to buy into the alpha, and you can play with a browser demo free of charge. I love the hand-drawn style, evocative of every schoolroom doodling ever put to paper by a bored geek! Mute the sound, though.