Overpopulation is an ability introduced in Creature Chaos that greatly reduces the time needed to build creatures that possess it. In many cases, creatures with this ability require less than two seconds each to build.
In that context Overpopulation seems like a very useful trait, but the fact that the Lemming is the only animal that possesses it makes it difficult to implement because of its poor stats. In spite of this, it is potentially very useful for Rushing, especially in the "Chamber Rush" tactic.
Animals with this abilityEdit
Lemming (Inherent) (Creature Chaos only)
If a creature with this ability takes less than 2 seconds to build in-game, it causes a graphics glitch in the Creature Chamber; the particle effects that are normally shown when building a creature fail to appear due to the speed of production, but endlessly remain once the creature is created. Building a creature without Overpopulation usually fixes this.