NS2 Wiki

Eggs and evolving

How aliens respawn from eggs, and how to evolve into a new lifeform or pick upgrades.

Egg

Eggs#

Dead aliens respawn from eggs around the hives. Eggs have 350 health and are flammable.

  • Each hive grows a new egg every 13 s (faster in big games: the time is scaled by 6 ÷ number of players, for teams larger than 6) up to 2 eggs (more in big games).
  • A dead alien waits at least 10 s, then is given the next free egg; dead aliens are queued in order of death.
  • Shift Hatch lets the commander spawn extra eggs near a Shift.
  • Marines kill eggs with the axe, grenades or fire. Exos crush eggs by walking over them. A team that loses all its eggs cannot respawn until new ones grow.

The commander can also turn an egg into a lifeform egg (Gorge 20, Lerk 40, Fade 80, Onos 100 team res; needs Biomass 2 / 4 / 8 / 9). The next player to spawn from it hatches as that lifeform for free.

Lifeform eggs show as their own icons on the alien minimap, so players can see where a free fade or onos is waiting.

Starting upgrades. If you respawn without having chosen an upgrade for a chamber, you get Carapace (Shell), Celerity (Spur) and Aura (Veil). Anything you picked yourself is remembered and used instead.

Evolving#

Press B to open the evolve menu. Pick a lifeform and/or up to one upgrade per chamber type, then confirm. You turn into an embryo (cocoon) and gestate:

LifeformCostGestation
Skulk03 s
Gorge107 s
Lerk2115 s
Fade3525 s
Onos5530 s
  • Each upgrade adds 2 s and costs the lifeform's upgrade price (Skulk 0, Gorge 1, Lerk 3, Fade 5, Onos 8 res).
  • Changing only upgrades on your current lifeform takes 3 s plus the upgrade time.
  • Embryos are vulnerable. Evolve somewhere safe: a gorge's heal spray speeds gestation up.
  • You need room to evolve into a big lifeform. If there is no space, the menu tells you.
  • If you die as an embryo, you lose the res you spent.

Where you evolve. You evolve where you stand if the lifeform fits there (the game only adjusts your height); you are not teleported to a random nearby spot. The evolve menu stays open while you move, so you can watch the placement preview and step into a clear spot.

See also#

Alien upgrades · Biomass · Spawning

Hover any number to see where in the game code it comes from.
Page source: content/aliens/eggs-and-evolving.md · Natural Selection 2 © Unknown Worlds Entertainment. Fan wiki, not affiliated.