GMs: What (across all editions) was your favorite adventure to RUN?

[Celebrim]

My all-time favourite, however, is "Nakki-Nakk", a friend's homebrew adventure* - I've run it twice now and would again in a heartbeat if I only had any players who hadn't already seen it!

* - this was also the very first adventure I ever played in; I didn't know what to make of it at the time, and only much later looking at it from a design (and DMing) perspective did I realize how good it really is. Players I've run in it since universally loved it.

Lanefan

There are not enough great adventures in the world. This sort of thing should be published.

 

[Stouthart]

A1-A4 - Slaver series was great fun in 1st Edition. Ran this back in middle school.

More recently, I really enjoyed running the Pathfinder Kingmaker adventure path. The players had a blast nation building.

Stouthart

 

[DragonLancer]

Necromancer Games' The Hall of the Rainbow Mage is probably my favourite.

 

[Oryan77]

My favorite to DM is the Planescape adventure Eternal Boundary. I've run it 3 times and I'm currently running it again for a new group. I'm not sure what it is that I like about it. It's just a simple adventure to run and the last chapter is pretty cool and takes place in a great location to explore.

Another Planescape adventure that I thought had really great encounters and a creative storyline was Fires of Dis. It provided a ton of creative encounters that were roleplay heavy, but I felt like this caused the adventure to drag on a bit too long if you ran them all like I did. They were great encounters and I loved running them, but most of them didn't impact the actual adventure at all and I think the players started getting anxious to finish the mission.

Finally, an obscure adventure that I really like is Beast of Burden from Dungeon magazine #100 . You have to raid a fortress built on the back of an enormous creature while it travels around the wilderness. Not only is that a cool concept, but the fortress itself was fun to navigate once you reached it.