"World" meaning the 3D landscape? ?Or the
players and their stuff?
Yes, the content. Yes, we can probably archive the game engine, but I
doubt anyone is capturing and archiving the world as they play*.
It's all in databases on servers.
The issue is archiving the databases. For the games that have died
out, did anyone bother to save these databases? Or even just the
format and structure?
* now waiting for the link for the WoW Real Time World Archive Project.