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...
Full Imperial Tech Tree for MegaGlest. Includes TECH and MAGIC factions. Unzip in the Techs folder of MegaGlest (alongside MegaPack).