Orius
Legend
I'll second B1. It's designed to be a tutorial for both players AND DMs. The dungeon was designed to show players the typical sorts of things they'd encounter at the time. More importantly, it's a tutorial for the DM. There's not just DMing advice, but the DM is given a list of encounters, empty rooms to stock, and instructions on how to do so. And on top of that, because there's a random element to how the rooms get stocked, and there are more encounters than rooms to stock, every time the module gets used it's going to be different, so there's added reply value. Plus it'll stymie the players that expect a "walkthrough".
There is some criticism over the adventure in that the DM does have to stock the whole thing or the map design, but a modern take on B1 would be a good thing.
There is some criticism over the adventure in that the DM does have to stock the whole thing or the map design, but a modern take on B1 would be a good thing.