Egg

Basic Information
​The egg is an alien structure that allows aliens to spawn into the game. A certain number of eggs will always exist at the start of the game and the total number will depend on the [layout]. Additional eggs can be built by grangers starting from stage 1. At stage 2 eggs can then be placed on ceilings. Once an alien spawns from an egg, that egg is unable to spawn additional aliens for 10 seconds. Aliens waiting to spawn on unavailable eggs will enter the spawn queue. When spawning, the egg closest to your death will be prioritised for your spawn.

If another alien or an enemy is standing inside the egg, the spawn will be considered blocked and will be unable to spawn in further aliens until the blocker is removed.

Eggs also provided the alien team with a 700 range building aura around the egg, much like the repeater for humans. This allows other structures to be built and powered nearby, as long as the Overmind is alive.

Egg placement strategy
Eggs must be placed away from direct human vision so they cannot be shot or that spawning aliens are not easily shot. At stage 2 most eggs should be placed on ceilings so they are more protected. Having at least 6 eggs in large games and 4 eggs in smaller games is highly recommended. Most often the best line of defence for your base is additional aliens who are always available to spawn and defend.

Eggs can be used to create forward or outpost bases for the alien team. Combining a forward egg with a booster allows the alien team to exert more pressure on the human team and gain more map control.

Egg counter strategy
The only part of the egg that can be shot and damaged is the lower (base) of the egg. Intentionally spawn blocking an egg can be an effective way to kill the egg while not having to deal with spawning aliens. This can be achieved simply by jumping into the egg. Ground eggs are extremely vulnerable to grenades and ceiling eggs are very vulnerable to the lucifer cannon

Game mode and QVM Variation differences
Tremulous 1.2 GPP
 * death splash radius increased 50 -> 100
 * no longer gives credits