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Storylines refers to special quests in The Sims 4 through which the player can progress by using their controlled sims and finish them, gaining special prizes.
The Sims 4: Jungle Adventure
The pack included a storyline in Selvadorada in which the player can travel through hidden temples and disarm traps left inside to uncover secret items.
Progress
TBA
Threats
TBA
Benefits
The Sims 4: StrangerVille
A storyline taking place in StrangerVille require the player to get rid of poisonous plants and free the town from strangeness.
Progress
TBA
Threats
Eating Bizzare Fruits optained through the storyline will result in your sim becoming Possessed.
Opening the first gates will release toxic spoures which will cause local possessed sims to wander around the town more frequently.
Provoking the Mother or failing a battle with her will result in your sim being eaten and Dying
Benefits
Once the player defeats the Mother, possessed sims will turn back into normal, If the player chooses to bring the Mother back to life, she can be befriended with and used to controll strangeness around the town and bring special prizes for the player, including money, happy moodlet, expanded lifetime and success in career.