Megadungeon Moduleworld

Something I feel like it would be cool would be to have some kind of combined "moduleworld", where there's some huge open hex map, and you can just take your character into this big MMO-like world and explore all the famous megadungeons and modules from D&D history, whether that be stuff like Stonehell, Rappan Athuk, and Barrowmaze, or TSR modules like The Lost City, In Search of the Unknown, Keep on the Borderlands, etc. I'm sure you can all think of other stuff that would be good to include, like City-State of the Invincible Overlord or Caverns of Thracia.

I fully realise that this is an impossible pipe-dream, and in all honestly I don't imagine it would be as fun as a regular well-run game in a setting that the referee is passionate about, but it would be a cool MMORPG-like experience, I think. I feel like this would be a good context to use the AD&D 1E ruleset for. I feel like the more comprehensive, standardised ruleset would work well for this kind of game. Maybe this would be the perfect use for AI, where it can just regurgitate the existing information while you play, and you can effectively play in "single-player mode" in this massive open world with countless dungeons.

Anyone have any thoughts on this?

If you can find a like-minded group of players, why not go for it?

There's already a plan in place for the general framework. As long as everyone took turns behind the screen I don't see why this isn't possible.

Cool idea. I think a number of folks in the OSR have already or are are building maps supporting this mode of play — classic modules and dungeons dropped down on a large hex map…

Sounds fun.