Imperial 2 is a steampunk / medieval techtree for MegaGlest. It includes the Imperial faction and Warlords Factions. The previous Imperial (1) tech tree is also available, but it's older and less cool!
Full Tech-Tree for MegaGlest (v3.5.2 or later). Has two full factions to play: Imperial Faction. Medieval/Steampunk faction Warlords Faction. Ancient-medieval Chinese faction with some Steampunk units added for good measure. To play, requires download of MegaGlest (www.megaglest.org). Unzip this 7zip in the Techs folder next to "Magitech" folder. Then run MegaGlest and pick the Imperial_2 tech tree.