Warcraft III: Reign of Chaos/Undead buildings

All Undead buildings produce "blight" for a certain distance around themselves. All Undead buildings, except the Necropolis, can only be built on existing blight. This means that any expansion requires a Necropolis first. Starcraft players will be familiar with this process. There are two types of Undead worker units: the Acolytes, who can do everything but harvest lumber, and the Ghouls, who can only harvest lumber. Interestingly, the Ghouls are also the basic combat unit! Unique to the Undead, their workers do not need to do more than initiate the construction of a building. They can move on to other tasks while the building "summons" itself. This is also familiar to Starcraft players.

Necropolis/+1/+2
The central base building. Produces Acolytes, the Undead worker units, although they cannot harvest lumber. Has a nasty defensive bite.

Ziggurat
Provides food. Has a nasty defensive bite, although it isn't very durable.

Altar ...
Produces Heroes.

Graveyard
Provides upgrades. Continually spawns corpses around itself to be used by Meat Wagons and Necromancers and Ghouls. Also used as lumber drop-off.

Crypt
Produces the early Undead combat units - Ghouls and Crypt Fiends.

Slaughterhouse
Produces Abominations (big melee units) and Meat Wagons (artillery and corpse transports).

Temple of the Damned
Trains Necromancers and Banshees, the Undead spell-casters. Can upgrade their abilities here.

Boneyard
Trains Frost Wyrms (big honking air units). They might be big, but they can be killed very quickly by proper anti-air tactics. You can upgrade their breath attack here.