Spore Crawler
The Spore Crawler is a Zerg base anti-air static defense structure, which deals 15 points of damage to air units and has the ability to detect cloaked units. Although similar to the Spore Colony, the Spore Crawler has the distinct ability to Uproot itself and Root in a new location, giving it very good mobility and a more flexible use. Take note that Spore Crawlers lose their detection ability while uprooted.
Spore Crawlers are used in ZvZ to protect against a lot of Mutalisks. In HotS the Spore Crawler was buffed to 30 damage vs biological units. This was reverted for LotV to 15, because Viper have Parasitic Bomb to deal with large numbers of Mutalisks.
Spore Crawlers have excellent endurance and deal more damage per second than Photon Cannons, but not as much as Missile Turrets. It depends how many AA structures or units are on the field. Queens are typically used to fill gaps in early game air defense, and Hydralisks remain more versatile on the move.
Spore Crawlers, like all air defenses, are most effective when tightly packed. This protects them from being singled out by clusters of air units.
Spore Crawlers are often built against Protoss to defend against early Stargate play. They complement Queens quite well against Void Rays and Phoenixes, since a Queen can stay near the Spore Crawler and use the range of its antiair attack to pick away at the Protoss air units, while fending off any that close on the Queen to attack it. As buildings, they are immune to the Phoenix’s Graviton Beam ability, and can provide cover for Drones and Queens nearby against Phoenixes.
Later in the game, they are used as static detection against Dark Templar; players will often build one at each base against an opponent known to have a Dark Shrine.
ZERG – THE SPAWN OF THE SWARM
WILD. FATIGUE. FLEXIBLE.
Once artificially created by the mighty Xel`Naga, the Zerg would eventually lead to their demise and become a threat to the entire galaxy. Because of their collective consciousness, this species is often referred to simply as “the Swarm.” In their quest for perfection, the Zerg adopt advantageous and superior gene strands into their own gene pool, wiping out “inferior” species in the process.
Zerg Buildings
While the Protoss rely on technological superiority and the Terrans on their adaptability, the savage Zerg rely mostly on pure mass. The mostly lightly armored creatures usually pounce on their opponents from all sides on the battlefield, leaving only a picture of devastation in their wake.