I participated in Dungeon23 a project to make a megadungeon one room per day, one level per month, yielding a 365 room dungeon at the end of 2023. While I did not complete the dungeon in 2023, I've decided to go with the the Eastman variation and finish it anyway. Full system neutral "generic" should post sometime in 2024, followed by a version with Pathfinder 1e links/stats at some point.
This megadungeon is the tomb of the great dragon Berbalkor, held captive under four magical seals, each beneath a buried city, one on top of the other. Berbalkor's treasure is said to be vast -- do you dare break the seals to recover it?
Currently, levels 1-4+12 (plus maps and outline for remaining levels). No stats, so you'll need to plug in appropriate monsters/etc. from your bestiary/system of choice.
Finished the 12th level plus all but one map (see Downloads above). Remainder of dungeon to follow some time in 2024.
Finished the fourth level (see Downloads above).
Finished the third level (see Downloads above).
Finished the second level (see Downloads above).
Finished the first level (see Downloads above). Special thanks to Dai Shugars for posting an excellent example/tutorial on formatting this kind of dungeon in LaTeX.
Looking for more? There are tons of wonderfully creative dungeons being churned out as part of #Dungeon23. Here are a few:
Some of the resources that I've been using: