Apparently it's possible.
But we'll have to reinvent the wheel in order to make it, the mod linked was never released.
But we'll have to reinvent the wheel in order to make it, the mod linked was never released.
For the ocean expansion I don't see any way of doing it without the ddl. Space exploration though is very possible to do with what we have got atm. But like you said about the actual ctp game, by the time you can go into space the games usually almost over, this is probably still the biggest obstacle.
I managed to build a city in the ocean using Ingame Editor. And yes, I saved and reloaded.
With the announcement of dll access we should be able to do proper underwater cities .