sidequest

Noun

 * 1)  A quest given to the player that has no direct bearing on the main story/campaign of the game.

Translations

 * Chinese:
 * Mandarin: 支線任務
 * French: quête annexe, sous-quête
 * German: Seitenquest, Nebenquest
 * Italian: missione secondaria
 * Korean: 사이드퀘스트
 * Turkish: yan görev