> > Well I've looked at everything. The only way to get a new theater into Yuri's Revenge seems to be to create a new sort of .tmp style file (like .ubn, or .*** whatever), but the game will not acknowlege that the new sort of file is in fact a kind of .tmp file.

> You need to update certain INIs.

You also can't add a totally new theatre, you must add to existing ones (which means you can make two in one though provided you don't want any extra high bridges).

> > Looks like I'm going to have to simply resort to modifying an existing type, like the .des (boy, am i gonna miss deserts).
> > I sure wish there was some way to work around that, how does it identify that those .ubn files are to be treated as .tmp files for the New Urban theater anyway? Oh, well. I tried, and you made the software that let me try. I don't want to live my life without failing at at least one thing! Thanx for making the mix editor anyway, it will help me.

> You might want to have a look at the unofficial terrain expansion.

TMP editor still has problems making new tiles and doesn't seem to alter tile numbers and position correctly...whenever I've tried even to just rearrange, it ends up loosing some of the tiles completely that I wanted to keep. I've managed to make most of the tiles that I wanted though.