Natural Selection Wiki
Natural Selection Wiki
Cosmetic Variants:

Normal Clog

Auric clog
Auric Clog

Shadow clog
Shadow Clog

Kodiak clog
Kodiak Clog

Reaper clog
Reaper Clog

Abyss clog
Abyss Clog

Nocturne clog
Nocturne Clog

Toxin clog
Toxin Clog

Kharaa Kharaa
Personal Resources
Icon personal resource neutral 0
250 (+4 per Biomass)
Max Amount 10 per Player

The Clog is a structure created by the Gorge using the Build ability. Used mostly for... well, 'clogging' (get it?) doorways, it can block off marines if placed correctly and blocks access for Exosuits, but also blocks Onos from exiting if you aren't careful. These can only be built in sets of 10 by a single player, limiting the overall amount available in the game to how many players you have willing to go Gorge. It is weak to fire, but absorbs burst damage from grenades and mines, meaning that mines placed in vents can be blocked by a gorge partially and spit to set them off, limiting damage dealt to any aliens in the vent.

Clogs are limited, and the oldest living clog built by a player will die if they try to exceed the set limit of buildable clogs for their limit. Gorges can also willingly digest their clogs, destroying them for their bigger team mates, such as Onos, which cannot go through vents and can only access hallways which Clogs are designed to... well, clog.

Later on, after Onos are more common, the best place to put Clogs is over evolution buildings or utility buildings, such as Veils, Shades, Shells, Crags, etc, so that when Marines rush a Hive base, the grenade-spamming which usually kills off all your support buildings has to go through the burst-resistant Clogs before it can reach the upgrade building. Beware, however, as Clogs cannot be healed or repaired, and are susceptible to fire, making them an easy target for any firepower toting marine.

Clogs can be hidden in Infestation Blobs a lot easier, too, allowing you to hide your clogs and evolution buildings beneath the carpet of green from the eyes of the enemy. They are not harmed by lack of infestation, but any buildings they may protect can be harmed, so make sure you have a 'peeking point' where you can reach the structure underneath to heal it, as alien structures struggle to heal themselves, and often are incapable of healing without Gorge assistance.

Tactical Summary - Clogs

  • Clogs can be destroyed by aliens by looking at them and holding
    when prompted.
  • They can be used to block the line of sight of Sentries rendering them useless.
  • They can be used to cover up Cysts making de-cysting Harvesters harder.
  • Dropping them under yourself while Belly Slide you not only get a boost, but also protect you from any Marine in pursuit.


Egg spawn buildmenu
Flammable Kharaa structures will take extra damage from fire-based weapons.
Damage Damage x 250%
Type Flame
Targets Bone Wall, Clog, Cyst, Egg, Hydra, Web
Requires Cluster Grenade, Flamethrower, Welder

Clogs are very flammable receiving not 500% damage from flame type damage but 1400% (200% for being a structure and 700% for being a Clog).


The following images show all the variations of Clog camouflage (skins) that you may see in the game. They are determinde by the skin of the Gorge who placed them.

Info Info:  • Not all variants are available for purchase.

          • Skins are purely cosmetic and offer no augmented or additional stats in-game.

Camouflage variants & availability
Variant Description Acquisition Notes
Normal Default camouflage. Provided with game. N/A
Auric Teal eyes and tendrils, grey skin, golden extrusions teeth-like spikes. Can be earned via Matched Play in-game. Part of Matched Play rewards system introduced in the Tanith update (Build 340).
Shadow Orange eyes, green skin, teeth-like spikes. Can be bought in the Customization Screen in-game. Originally part of the Reinforcement Program for Shadow Tier & above, and completed with the Merry Gorgemas! update (Build 336).
Kodiak Green eyes, jungle effect skin. Can be bought in the Customization Screen in-game. Released with the Kodiak update, and completed with the Merry Gorgemas! update (Build 336).
Reaper Red eyes, white skin, black exo-skeletal features. Can be bought in the Customization Screen in-game. Released with the Reaper update, and completed with the Merry Gorgemas! update (Build 336).
Abyss Blue eyes, blue skin. Can be bought in the Customization Screen in-game. Skulk was originally awarded for playing on Caged at its release, Gorge for Origin and Lerk for Metro.The set was completed with the Merry Gorgemas! update (Build 336).
Nocturne Purple eyes and tails. Can be bought in the Customization Screen in-game. Release with the Nocturne DLC as part of the NS2 5 year anniversary update (Build 319).
Toxin Green glowing eyes, green patches of skin and green belly. Can be bought in the Customization Screen in-game. Released with the Catalyst update (Build 324).