NTBF – New buildings for the towns in Tribes of the East 3.1.

The simplest and, most importantly, the most obvious thing to do is to check it ;)

Well, I played on Battle Maps... Didn't reveal anything (I guess it's roughly the same size as the observatory on a tree or whatever it's called). But I didn't finish building the castle... Maybe you need to build something for it to work?

It might be incompatible with EWA :(

And with pure Orcs 3.1, it kicks you out of the game altogether.