|The iconic Tube Map from TfL|
To me, this all says that this is a megadungeon. I think on a quick and non-scientific count (possibly using a slightly-different version of the map, I used one that also listed the stations) that there are approximately 400 named locations on this map. Were each a room or cave, that would be a largish dungeon.
The way I'm envisioning it, some stations - those that just have a block, like this:
- will just be a room off a corridor. If possible, the name of the station should have something to do with the contents (that might be inhabitants, function either ancient or current, features, treasure or decoration).
Other stations, that are interchanges, are marked like this:
These will be intersections between corridors, entrances (like this one), or both (anything with the old British Rail logo, seen here in red and referring to a connection with the railway network, will be an entrance to the complex... I think there are at least 60 of these, maybe about 65).
The entrances might work like this (I'm assuming as a hypothetical that the Northern Line is Level 2 here, but the intersections can actually come between any number of lines and with the rail network):
I need to try to isolate the lines to work out which work best as being 'the same' levels and which would be better on different levels. I also need to work out what this means:
Is that one room accessible by two corridors? Is it two rooms, each accessible by different corridors? Is it two rooms in the same place on different levels? I don't think it can be a single room; that would necessarily make it an interchange (ie a way of getting from one corridor to another). It has then to be two rooms (either on the same or different levels). So I need to up the number of 'rooms' - each time a station like Bayswater appears it needs to be counted once for each line that comes in. Interchange locations are a bit trickier - one big room over different levels, or linked rooms? I guess the situation might have to dictate that. Perhaps one of the other symbols (there are two different wheelchair symbols) might be used to decide it - for example, if there's a wheelchair symbol there's 'access' between two (or more) rooms, where there's no wheelchair it's all one big room.
There are also seven stations (that I could see) where boat logos are displayed. The best reason for this is that it provides access to the ?underground water-course. I'll have to check the levels carefully to make sure these are all on the same dungeon level, or provide some good justification otherwise - an underground waterfall is fine to move from a higher to a deeper level, but makes travelling 'upstream' really tricky.
All of this I'm sure could combine into an interesting dungeon environment. But... I won't do it all. And that's why I think it would be a good thing to open it all up. Who wouldn't want to be part of building a co-operative megadungeon around the London Underground?