The Sims 4 ‘100 baby challenge’ rules

Learn the rules of the 100 Baby Challenge in The Sims 4.

The 100 Baby Challenge has been in The Sims series for around a decade now, starting way back with The Sims 2. The challenge’s objective is simple: have a female Sim give birth to 100 babies in as few generations as possible. The challenge has changed somewhat throughout the game releases with its rules and guidelines.

To get started with the challenge, create a young adult, female Sim that we will refer to as “the Matriarch.” While she is referred to with female pronouns, you can have her be non-binary and any traits/customizations you want.

Find a Sim to impregnate your Matriarch; these are referred to as donors and mentioned with male pronouns, but like the Matriarch, can be non-binary as well. Here are the rules for the challenge for The Sims 4:

Basic Rules

  • You must play with aging on and set to a normal lifespan. Auto-aging for NPC’s is encouraged to ensure the game keeps generating donors for your matriarch.
  • Any mods or CC that give you an unfair advantage over other players are not allowed. Mods that allow you to increase your household capacity or gain money through child support payments are not allowed.
  • Cheats are not allowed. The only exceptions to this are bb.moveobjects on for creative building purposes and other cheats to resolve glitches.
  • If a lot your matriarch moves into has existing lot traits, you may not edit or add to them. If your lot has no traits, you may pick three traits, but your decision is permanent. You cannot change them afterward.
  • All in-game rewards from completing aspirations and social events may be used except ones that prolong your Sim’s lifespan or save them from death.
  • Babies cannot be aged up until you get a notification saying that it is their birthday.
  • Toddlers can be aged up when they reach level 3 in all toddler skills.
  • Children and teenagers can be aged up when they get an A in school.
  • Young adults can be moved out of the house to make room for more children, but they cannot be moved back in.
  • When your matriarch becomes an elder and can no longer bear children, her youngest daughter takes over as the next matriarch. You may move out your elderly matriarch only if her youngest daughter has become a young adult.
  • You cannot make more room in the house faster by killing off underage Sims or letting babies, toddlers, or children be taken by social services.
  • Your matriarch may register as self-employed or have a work from home career but cannot have any job that requires her to go to a rabbit hole destination. She cannot have a part-time job.
  • Teenagers may hold part-time jobs to help support the family and bring in extra income.
  • Your matriarch may leave her home a lot freely. She does not have to bring all her children with her whenever she leaves the lot.
  • Your matriarch may not get married while she is of child-bearing age. She may get married as an elder, but she must move out of the home with her spouse. They can’t move into the active household.
  • Your matriarch may not get pregnant by the same donor twice. Once he has impregnated your Sim once, he cannot be used again for more children.
  • Donors may not contribute to the household in any way. They may not move in, help look after the children, or provide any financial aid to the household. Your matriarch is responsible for supporting all her children by herself.
  • Your matriarch may not influence the gender of her children. Avoid strawberries, carrots, pop music, and alternative music to avoid influencing the gender of unborn babies.
  • Use the in-game randomizer to select all the children’s traits as they age. You cannot cherry-pick their traits.
  • You may hire maids, gardeners, and repair technicians, but you may not hire a nanny. Take care of your own children.
  • You may hire caterers and mixologists but only for parties.

Rules for Add-On Packs

  • Disregard any rules for packs you do not have.
  • Your matriarch may run a retail business, restaurant, or vet clinic. Teenagers may help out at these venues as an alternative to hiring employees.
  • Your matriarch may have a work from home job, but she must always choose the work from home option.
  • Your matriarch may join and create clubs as long as the club activities do not violate any challenge rules.
  • Your matriarch may have pets but keep in mind pets take up space in the household, and there are no rewards for having them.
  • You may participate in holidays and create your own holidays as long as none of the traditions violate challenge rules. Feel free to edit existing holiday traditions to comply with the rules.
  • Your matriarch may become famous and build a reputation through any means that don’t involve careers.
  • Your matriarch may go on vacation, but she must bring her entire household with her. She may not go on vacation if she is pregnant or has a newborn at home.
  • Your matriarch cannot be a vampire. She may use vampires as donors, but any female vampire children are ineligible to take over as the next matriarch. You may cure a female vampire child to make her eligible again.
  • If Parenthood is installed, teens may not be aged up and moved out of the house until they have an A in school and at least one character value within the trait range. Your matriarch must always stop whatever she is doing and go scold/punish her children as you see fit if you catch them misbehaving.
  • Your matriarch may use the wishing well, but she cannot wish for a child.
  • Your matriarch may hire a butler, but the butler cannot look after the children. Disable child care in the butler’s menu.

Rules for Occult Sims (Optional)

  • Your matriarch must be human.
  • Each occult born to your human matriarch adds two to your total child count, so one occult child is worth the equivalent of two human children.
  • If you choose to make your next matriarch an occult, you forfeit this bonus until you take another human matriarch. For immortal occults, you can take on a new human matriarch when the human daughter you want to continue the challenge with becomes a young adult.
  • If your chosen occult has an alternate form, your matriarch and all her children must always be in their human form whenever they leave the lot.
  • You may not tip off Sims outside the household that anyone in your household is an occult. If occult-related socials are used or if a Sim discovers that anyone in your household is an occult, they must be banished from the home immediately and never be socialized with again. Feel free to get creative with how your family protects their secret. For instance, have your aliens wipe memories, or your vampires compel for a deep drink.