Just finished a couple more terrains and here's the list of what is available at my site right now:

UFO Defense
- Area 51 (military base, new version on the works to include the maps of the UFO2000 version)
- Apartment/City (a different type of city for terror sites)
- Fort (little experimental terrain)
- Hive (the alien's nest)
- Native (replaces the Mars terrain with a tropical village)
- HWP Factory (to be included later with Area 51)

The last two need XComUtil to be playable. With the exception of Native all of the others replace the City terrain of the terror sites.

UFO2000
- Native
- Siberia
- Area 51 (consists of 5 different terrains: Standard, Complex, Objectives, Skyranger Factory and Assault)
- Farm with UFOs
- Cydonia with UFOs
- Slum
- Railyard
- City/Apartment

Area 51 and City/Apartment require only the UFO Demo to be installed with UFO2000, Siberia, Native, Farm and Cydonia with UFOs require UFO Defense, and Railyard and Slum require UFO and TFTD.

Enjoy!

Cool

*makes note to try them*

I love your maps Hobbes, some I can't use because I don't have TFTD, but I bet they're good too. Thanks for putting your time and effort into them.