For 1e, no less.
- The Halls of Arden Vul Complete
- "Arden Vul is the most ambitious megadungeon ever created, with over 1,100 Pages of Incredible Adventure. This First Edition compatible fully-bookmarked PDF product features:
2,162 Encounter Descriptions
14 NPC Factions
10 Massive Levels
15 Extensive Sub-levels
7 Dangerous Exterior locations
149 New Monsters
332 New Magic Items
69 New Technological Items
44 New Spells
189 New Books through which PCs can gain a deep understanding of the dungeon
A full NPC appendix with 10 competing parties at 3 levels of power
Over 140 original pieces of art, including 28 full-page illustrations!"
- "Arden Vul is the most ambitious megadungeon ever created, with over 1,100 Pages of Incredible Adventure. This First Edition compatible fully-bookmarked PDF product features:
I could see this being run here on the forums at some point.