B1, I think it was, In Search of the Unknown, the one that came in the c1980 Basic Set, which, I'm guessing, I'd already played in. I promptly lost it, though. I finally got a copy and ran it using 5e the Feb after that came out. I guess that's my record for greatest lag between buying & running.Just getting some nostalgia/ discussion going.
What was the first module that you purchased?
"Sprechenhaltestelle." For Top Secret. From the pages of Dragon Magazine, but not technically official, I don't think. A complete trainwreck, since I ran it like a dungeon - which is the only reason I remember, with certainty, that I did run it, not just read it.What was the first module that you ran? Was it for D&D or another game system? Was it official?

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.