The map emplys the use of mercenaries, and has a combat system which revolves around the three unit types Armored, Psionic and Biological.
Map creator Ekcolnovkol has the map up on the Asia, US and European servers. Check out these two videos here if you are still doubting whether to try it or not.
Links
PlaySoTIS.com - Source
Facebook.com - SoTIS on Facebook