The Protectors of Etheria is a stand-alone mod of the game Warlords Battlecry 3 (i.e. it can be run without having the original game installed - 100% free full game). It is an improved RTS/RPG game with new campaigns, quests, terrain, units, items, heroes, modding features and more. Beta versions available for download!
The Undead get a new building in 0.9, known as the Necromantic Conduit. These buildings turn corpses into a power that increases their resource income rate. Once activated, the conduit remains active for the remainder of the game. The corpses it uses can either be those on the floor nearby from defeated invaders or brought to them by Zombies who collected them with their Scavenge ability.
I remember this building.
Nice to see Undead get more corpse mechanics. I hope the Necro.Conduit building will have a few upgrades too.