Third Party
A player or team that enters an ongoing fight between two others to attack weakened survivors.
“We almost won the duel, then a third party arrived and cleaned up both teams.”
Common in battle royale games, third party can be a noun, verb, or description of opportunistic intervention.
The phrase comes from the ordinary meaning of an outside participant and became standard battle royale vocabulary.
third-party team
The outside team entering a fight.
getting third-partied
Being attacked by an outside team.
third-party the fight
To enter another team's battle.
Why is third partying effective?
The original teams may be injured, low on resources, or distracted.
Is third partying unfair?
It is usually a normal strategic part of free-for-all and battle royale games.