Challenge event

A challenge event is a temporary seasonal challenge in The Sims 4, added via patch. These events can offer new items and interactions as rewards if Sims completed the goal within the one week in real time they can get the rewards even after the event ended. Some Events will be started by talking with Jasmine Holiday.

Bunny Egg Hunt
On March 2015, an update added the Bunny Egg Hunt. This challenge added in special decorative easter eggs Sims can find like any other collectable and collect up to 12 different kinds, when a Sims household collects all 12 eggs they will unlock a new object the "Bun Bun the Bunny".

The Bunny Egg Hunt returned again the next year on March 2016 allowing Sims to once again collect decorative eggs.

Trick or Treat Interactions
On September 2015, in theme of the recent stuff pack The Sims 4: Spooky Stuff, two interactions were unlocked for a week in real time, Trick and Treat, these interactions allowed Sims to give other Sims treats and sweets or Trick them by scaring them.

Spring Challenge
On March 2016, along with the return of the second Bunny Egg Hunt, Jasmine Holiday was introduced with a new challenge for Sims to do, Sims can grow their own Growfruit. If a Sim has grown 20 growfruit, they can redeem them to Jasmine to get a new planter in build mode. If a Sim grows a perfect growfruit, they can redeem it to Jasmine for a fancier planter in build mode.

Triple Boost Week
On August 2016, Jasmine Holiday returned once again, if a Sim talks to her they will be granted a boost in their careers and skills three times more than usual for seven Sim-days.

Day of the Dead Event
On November 2016, there is Day of the Dead event that is teased in the Day of the Dead gameplay patch, once the event is activated there is a special UI for the event, Jasmine Holiday returns and must be called from the phone to appear on the lot so then Sims can "Ask about Day of the Dead Challenge" to which she will give information on the event and it's celebrators as well as how to get Sugar Skulls. There can be found 10 Sugar Skulls and a display case for them.

Completing the collection and "Honor the Dead" interaction will add the "Day of the Dead Celebrator" moodlet granting new interactions as well as new interactions with the Grim Reaper.