A Convergence Event (or Convergence) is the final process of a Marker and the affected lifeforms of a given planet (or planets).
Throughout the series, "convergence" as described by Unitologists was a vague description of becoming a singular entity or made whole by the Marker. Unitologists sought to preserve the bodies of the deceased in mausoleums or, during a Necromorph outbreak, suicide by apparent suffocation or self-mutilation allowing the lifeform to take over their bodies.
In reality, Convergence is a process triggered by a Marker, when a large enough amount of organic matter has become infected with the Necromorph pathogen, the Marker will pull all the infected tissue into the stratosphere, where a Brethren Moon forms and absorbs the Marker that created it, along with the organic tissue of the creators of said Marker.
Once a Convergence Event is initiated, the Marker flashes brightly and emits a fog horn-like sound. Powerful thrusts of wind fling Necromorphs into the air and above the Markers, creating the first pieces of the Brethren Moon. Chunks of nearby planets and asteroids are caught and collected in its gravitational pull as the moon grows larger and larger. Once the Brother Moon is completed, the creators of the Marker must be killed and "absorbed" into the sentient moon, possibly in order to give it the sentience needed to guide its feeding on organic life throughout the galaxy.
A Convergence Event can be stopped either by the destruction of the Marker that triggered it or by the destruction of the incomplete Brethren Moon itself. In the case of the moon above Tau Volantis, a machine powered by a Codex destroyed the Moon and its signals.
- When Convergence is initiated, a surge of electromagnetic energy shocks out from the Marker's base, wiping out (most) electronic machinery, as evidenced when the Aegis VII Marker disabled the USG Ishimura's gravity tethers with its shockwaves.
- In the event that multiple Markers are present during Convergence, a random Marker is used as the primer of the event and the other ones are re-absorbed into the Moon. These re-absorbed Markers can be utilized as Kinesis-propelled projectiles during the Tau Volantis Moon fight.