...a cool idea......

Here at Dragonsfoot http://www.dragonsfoot.org/forums/viewtopic.php?f=42&t=65381 The post discuses the use of the classic arcade game " Dragon's Lair" as a playable dungeon but it approaches it like a normal D&D game. You cannot represent DL with " Ok Bob, it's your turn what are you doing?" So I've got a germ of an idea.

The castle itself is a dream construct of the way-too-powerful-to fight Dragon. From a distance the castle is changing, growing towers, walls falling , getting bigger and smaller in rapid succession. The castle "eats" interesting things that the players will need to extract. It is also Multidimensional and planer and moves around.

The way I am planning on running it is that individual rounds are broken into 3 parts and only one player gets an action to interact with the "trap". a second player will be able to aid the "phasing" player in what ever action he takes. casting spells will be broken up over the 3 partial rounds(depending on L of spell).The phasing player will in essence be the party leader for the 3 partial rounds. The phasing player "job " will be rotated in some fashion(havent got this worked out yet). This is all run w/ the idea that you are trying to recreate the frantic pace of DL The growing and shrinking nature of the castle forces constant movement on the players A brief description of the situation will be provided with the idea of "looking around" will be an action that takes up a whole "partial" round. A few normal combats to be sprinkled in.

Since a lot of work will go into an encounter that should only take IRL 2 maybe 3 min., the rooms and traps are reusable (justified by the "dream logic")

This will obviously not work for a large group of players. Prob want to keep it to 3 or 4.
This will require MASSIVE prep time for what will prob amount to a 1 hour crawl at best (depending on how many standard fights you work in) That's why REUSABILITY is key. To make the prep worth it , you can rerun it w/ the "dream logic"

Not sure if I'm going to pull the trigger on this. But I really like the idea.Not promising a part two if I don't.

POST 200 !!!!!! Bat Cave 2 (megadungeon)

You should read Batcave one and The Better recap of Sundered worlds first

Ok I don't plan on the main Dungeon part of 8-10+ year plan for Sundered Worlds/Stolen World campaign until the end. But through time travel the players will visit briefly once in a while. As of this writing there are 5 or poss 6 different main sections each of which will use a different rule set and different character sheets except for option area 6 all of the side areas are actually in pocket dimensions attached to the Bat Cave

The whole point of it  to stop the destruction of the universe in the Dungeon.

Phase 1 of the Campaign is set in the Sundered Worlds, as the universe collapses our hero's search for the dungeon and what does the Chinese Parade Dragon artifact have to do with it. This is using Pathfinder rules ,5th L Huge stone monoliths will be placed in the Stolen Wold , anchoring and  stabilizing the fragments of the remains of the universe.

Phase 2 a is their stranding in The Stolen World and the ongoing hunt for the dungeon. From this point on the main rule set I will be using is Crypts and Things( sometime around 4 - 6/17 is start)

Phase 3 is the exploration of the dungeon and the gradual revealing of the main villains and true motivations of various NPCs

THE BAT CAVE ITSELF

Main Center Section

The original construction is goblin and the the Kuthrii Empire's lifeboat against the end, this is by far the biggest section of the dungeon. PC's will be using Crypts and Things rules
as of this writing I am going to modify The published(not by me) Stone Hell dungeon series as a time saver. It will have to be HEAVILY modified. Surrounding the main area are 4 smaller sections that each will use a diff rule set

Area 1 Sphinx
This is a parody of a true 1974 old school dungeon,egyptian themed, the pc's have already spent 8 games exploring the future. The rules are heavily modified Swords and Wizardrys, they started at first and are now second

Area 2 The Baron
this section is the home to a classic Dracula. The rules will will be using will be custom D&D with character classes such as farmer, maiden or prince, the pc's will be given character overlays of their true(IE Pathfinder) selves,they will be inhabiting the bodies of other peeps and their personalities will blurr, they will always be first L, eventually they will learn how to trade bodies. . This is the next area to be previewed in a flash forward and it will happen soon. slight poss will use 25 point GURPS char's. This area will contain a  twon and teh Baron's Castle, poss this will be the very very end as they will have to face The Baron w 1st l chars

Area 3 The Tsan Chen
These are extremely powerful sorcerers who have fled here from their extinct time ling(they are breifly mentioned in HPLs writings) They have contol  of a gug(also HPL giant) city that is also here, rules will be pathfinder w original char sheets

Area 4 The Witch
done the least work on this, rules will be D&D 1e with my original skill sheet that I just found(It is more like feats) from 1981.

Optional area 6 the Dragon
This is detailed in the "Diff way to Dungeon Crawl" post, really trying to push myself to this but right now it's a maybe, either Pathfinder or more likely C&T would be used

A BETTER recap of the Sundered Worlds Campaign

The players were escorting a planewalker to an ancient abbey to undertake some sort of epic spell. As the ritual took place the abby came under attack bu a spellweaver , rakshasas and cosmic barbarians. A massacre ensued and the players grabbed a mysterious artifact(looks like Chinese parade dragon for 4 dancers.

They escaped into the supernatural winter and just as they arrived at civilization collapsed in fatigue.

They found themselves transplanted to another dimension(going from 5th L Pathfinder chars to 1st L OD&D chars). Finding themselves in the Bat Cave some years in the future. The dungeon was decorated with mosaic of the pc's throughout, Eventually they encountered a Sphinx that was too smart to talk to. Quik thinking lead to getting him to write things down. He revealed that the universe is collapsing due to the destruction of the abbey. and that a point in the future they would have to return to the dungeon and save the universe by merely switching 5 leavers in the dungeon, they were also told that dif sections of the Bat Cave had dif planer realities(IE they would be playing multiple rules sets w. new char sheets as they moved through it,)
AS the universe is collapsing and the Confederacy(good and the Alliance are in turmoil fighting each other and in a hopeless battle to stabilize the dimensions.In a frontal assault on the Spellweavers both the Confedarcy and Alliance have taken tremendous losses in troops ,planeswalkers and Gods.The leadership of the Confederacy is dead scattered and just plane missing. Refugees are flooding the most stable of the Confederacy's dimensions but the planeswalking walls both side erected have collapsed and every plane is on the front line of the war. A mystererious and powerful planes walker has asumed control of the Alliance and knows the PCs their destiny, to save everything , although he is seemingly putting them off in compleating that destiny for unknown reasonsThe PCs helped stop an invasion of a fortress dimension ,that now is acting as HQ, they are in the middle of rescuing POWs from the Vampires , who seem to have taken over control of the Alliance from The Spellweavers.

Sundered Worlds Session 4: The Feeling of Liberation!

Cleric, fighter Mu again
still under my 4 player min. but we had a blast with the OSR rules and dungeon. We all loved the lack of structure. The corny OSR encounters were refreshing. They still will not leave dungeon and go back to their 5th L Pathfinder char's. I might have to rethink EVERYTHING about campaign!

The Bat Cave(megadungeon) Part 1: Overview and history

History

approx 30,000 years ago dungeon starts out as major cavern system that has been occupied by goblins.

27,000 years ago Caverns worked into Major goblin metropolis, the capital of huge empire.

25,000 years ago The 1000 year cycle of Apocalypse's of The Stolen World begins

23,000 years ago Kuthrii Empire takes over cavern and uses as lifeboat against the Apocalypses

20,000 years ago Kuthrii Empire is brought down by infighting, goblins make resurgence but never come anywhere near their height.

12,000 years ago Halani Empire expands lowest section of "lifeboat" but never lasts past the 1000 year cycle

6,000 years ago goblins only survive in dungeon and are shadow of former selves.

4,000 years ago Minor Evil god Sinister takes on his "Joker" persona to hide his true pathetic apearance, he is master of illusion, takes over Bat Cave(as he calls it) adding slowly to the OSR type dungeon (although he is only approx L11 in power, he is the most powerful diety by far of the very low level Stolen World

3000 years ago Bat Dragon calls Bat Cave, imediatly goes to sleep, The job of thadventurers is to wake him up

100 years ago Bat Cave is done and goes into stasis,

This week real time, Dreaming Bat Dragon, Brings adventures to him in dungeon part 1 Sphnix, The 5th Level Pathfinder players will be given new char sheets and awaken w 8 HP as max in party