Thanks for taking the time and congrats on the success of 5th edition!
mikemearls35 points19 days ago
1st edition adventures rely a lot more on player ingenuity. Without rules for searching and such, they usually relied on players to puzzle out how to find a hidden treasure. You might need to specifically say you were looking under a rock or pushing a set of buttons in the right sequence.
Favorite 1e adventure would probably be Steading of the Hill Giant chieftain. Have run it multiple times, it does a good job of giving players lots of problems to solve and no one, clear right answer. Commentfrom discussion AMA: Mike Mearls, D&D Creative Director.