Alien Structures

Introduction

Player Built Structures

Gorge Structures
Owner	Structure	Description	Shared Attributes	Additional Information
Gorge	Hydra	Small static turret that detects Marine presence and shoots spikes at Frontiersmen units and structures.	Can stick onto walls, ceilings, and Clogs. Auto-builds at 70% build rate without Grow or Heal Spray. Vulnerable to fire from Welder, Cluster Grenades, and Flamethrower. Digestible by owner to remove from play. Destroys oldest structure when new one is placed and limit is reached.	Grows when on Infestation, but requires Heal Spray when on uninfested ground. Cannot attack when on fire. Maximum 3 per player.
	Clog	Organic blob that can act as blockade and absorbs all types of damage.		Instant build time. Resistant against high burst damage such as Grenade Launcher explosions. Cannot be healed. Maximum 10 per player. Digestible by both owner and friendly players to remove from play.
	Bile Mine	Bile Mine - Oval-shaped egg that detonates when Marines get close or it's hit by Spot and deals corrosive (armor only) damage (15 dmg/sec) orver 3 seconds
	Babbler	Babblers - Spawn on the Gorge to give to use them with as Shield, or give them orders via Babbler Bait		Spawns one Babbler automatically every 1.5 seconds when out of combat for 2 seconds until the Gorge owns 6 Babblers Babblers transferred to another lifeforms will give them their owner ship. The Lifeform will gain a Mucuous Shield and the Gorge can now respawn new Babblers
	Web	Strand of webbing that slows Marines and Exosuits on contact.		Place at two points to create a strand of webbing. Can stick onto walls and ceilings. Can stretch several times its normal length. Breaks when touched by Marine or Exosuit. Slows down the target temporarily. Prevents jumping and using Jetpack. Can only be removed by Welder, Flamethrower, and grenade explosions. Requires Biomass level 7 and Upgrade Gorge from the Hive. Maximum 10 per player. Cannot be digested. Destroys oldest Web when new one is placed and limit is reached.

Basic Commander Built Structures

Basic Structures
Structure		Description	Additional Information
Cyst		Small structure that grows Infestation around itself.	Can be placed on uninfested ground. Creates a chain of Cysts in between by placing one Cyst at the final location. Each extra Cyst costs Team Resources. Must connect to active Hives and other Cysts to survive. Grows only when its parent Cyst is grown.
Harvester		Harvests Team and Personal Resources for the Kharaa to build, upgrade, and evolve.	Grows only on top an infested and unoccupied Resource Nozzle. Auto-builds at 70% build rate without Grow or Heal Spray.
Cocoon	Drifter	Cocoon - Grows and hatches into a Drifter. Drifter - Worker unit that speeds up structure growth.	Costs Supply to build. Grows only on Infestation. Drifter speeds up build time for unbuilt Kharaa structures. Can use various support abilities: Enzyme Cloud, Hallucination Cloud, and Mucous Membrane. Can hold position, patrol between two points, and follow nearest player. uses passive abilities depending on the type of the Hive
Hive	Egg	Hive - Kharaa command structure that houses the Alien Commander. Egg - Spawn point for Kharaa players into the Skulk.	Grows only on an unoccupied Tech Point. Auto-builds at 70% build rate without Grow or Heal Spray. Heals nearby lifeforms, spreads Infestation over a large area, and spawns Eggs periodically. Cannot heal when on fire. Can spawn extra Eggs using Hatch ability. Alien Commander can pre-evolve Eggs into different lifeforms for players to spawn from or use. Unlocks 1 Biomass level by itself, and can upgrade 2 additional levels (maximum 3 levels per Hive). Enables Upgrade Gorge to unlock Babbler Egg, Bile Bomb, and Web abilities based on Biomass level. Evolves into 1 of 3 different Hive types to unlock Evolution structures.
Pheromones		Waypoints that are only visible to all Kharaa players.	3 different types: Threat, Need Healing Here, and Expanding Here. Can be placed anywhere on the map. Fades away over time.

Advanced Commander Built Structures

Advanced Structures
Structure	Description	Shared Attributes	Additional Information
Crag	Semi-static defense that heals nearby Kharaa units and structures.	Grows only on Infestation. Costs Supply to build. Auto-builds at 70% build rate without Grow or Heal Spray. Can slowly move but takes damage when away from Infestation.	Healing does not stack. Cannot heal or use Heal Wave when on fire. Unlocks Heal Wave ability when a Crag Hive is complete. Heal Wave increases the amount of healing from the Crag.
Shade	Semi-static defense that renders all nearby Kharaa units and structures invisible.		Cloaked units and structures are transparent but cause visible distortion. Cannot cloak or use Ink when on fire. Unlocks Ink ability when a Shade Hive is complete. Ink shrouds the area around the Shade in a black cloud that obstructs sight and stops Scan detection.
Shift	Semi-static defense that recharges nearby lifeforms' energy.		Cannot energize or use Echo when on fire. Unlocks Echo ability when a Shift Hive is complete. Echo allows the Alien Commander to move structures near the Shift to anywhere on Infestation.
Tunnel	Large orifice that creates an underground organic tunnel, which connects to the linked entrance at anywhere on the map.		Tunnels require infestation to be dropped (but do not take damage off-infestation) Spreads Infestation around itself once upgraded to Infested Tunnel. Can only be built on flat ground with enough space above to exit. Lifeforms, Marines, and Exosuits can enter the tunnel by standing on top of the entrance, then rapidly travel between each entrances' locations. Acidic bile inside the tunnel corrodes Frontiersmen Armor. If both Tunnels are destroyed, the tunnel will collapse and kill all players inside it. One set of tunnels per hive
Whip	Semi-static defense that whacks nearby Frontiersmen units and structures.	Can uproot from Infestation to relocate itself. Does not take damage when away from Infestation. Cannot attack while uprooted. Cannot attack or use Bombard when on fire. Matures over time to gain Bombard ability that throws an anti-robot, structure, and Armor bile sac over a long range.
Shell	Unlocks Carapace, Regeneration and Vampirism evolutions.	Grows only on Infestation. Auto-builds at 70% build rate without Grow or Heal Spray. Evolutions' power level increases with number of same structures (maximum 3 levels).	Requires Crag Hive to build.
Veil	Unlocks Aura, Focus and Camouflage evolutions.		Requires Shade Hive to build.
Spur	Unlocks Adrenaline, Celerity and Crush evolutions.		Requires Shift Hive to build.