Zerg Buildings

Few Reminders

 * 1) These Buildings can only be created by a drone.
 * 2) One building cost one drone.
 * 3) Some buildings can be upgraded. (Like the creep colony)

These are the Zerg Buildings
C D E G H I L N Q S
 * Creep Colony
 * Defiler Mound
 * Evolution Chamber
 * Extractor
 * Greater Spire
 * Hatchery
 * Hive
 * Hydralisk Den
 * Infested Command Center
 * Lair
 * Nydus Canal
 * Queen's Nest
 * Spawning pool
 * Spire
 * Spore Colony
 * Sunken Colony