How to Have Twins or Triplets in the Sims 3

Last Updated: September 16, 2022

Sims are great, but multiple identical Sims are even better. Twins and triplets in Sims are rare, but they can add a whole new element of strategy and enjoyment to Sims 3. If you’ve wanted to try your hand at twins or triplets in Sims 3, follow this guide to learn how to maximize your chances.

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1
Get the Fertility Treatment for both parents. The Fertility Treatment is a Lifetime Reward that you can purchase if you have 10,000 Happiness points. You gain Happiness points as long as your Sim is in a good mood, and you can gain significant bonuses for fulfilling your Sim’s Desires and completing their Lifetime Wish.
- Click the triangular button labeled “Sim Panel”.
- Click on the treasure chest button labeled Lifetime Happiness.
- Click on the Lifetime Rewards button.
- Scroll until you find the Fertility Treatment. This reward costs 10,000 points.
- For maximum effectiveness, both parents should have this reward.
2
Get your Sim pregnant. To have twins or even triplets, your Sim has to be pregnant. To get a Sim pregnant, the two Sims of opposite gender must have a high romantic relationship. The Relationship bar will need to be almost full for pregnancy to occur.
- When the Sims are getting intimate, there will be a "Try for Baby" option in the Romance menu. You must use this option; WooHoo does not result in pregnancy. If you hear a lullaby sound when they are done, and the female Sim no longer has the option to run somewhere, your Sim is pregnant.
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3
Have the mother perform child-related activities. Once your Sim is pregnant, she should constantly be watching Kidz Zone on TV, listening to the Children’s Music radio station, and reading pregnancy books. You have several in-game days before the birth, and the mother should be performing these actions as much as possible.
- Try to keep the mother happy during the pregnancy so that you have some control over the traits of the new infants.
Decide whether you want boys or girls. If you want boys, eat three or more apples consecutively in the first two days of the pregnancy. If you want girls, eat three or more watermelons continuously in the first two days of the pregnancy. ^{[1]
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Once you’ve given birth, it’s time to start taking care of the new kids. Make sure you have extra money set aside, as raising twins can be significantly more expensive than a single child.

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If you have Showtime, you can wish for a large family with a Genie. Your Sim will get a moodlet, "Feeling Fertile," which will remain until they Try for Baby; this interaction will automatically result in a set of triplets.
If you have Supernatural, drinking a Procreation Elixir will give your Sim a "Twinkle in the Eye" moodlet for 8 hours. Trying for a baby within those 8 hours will automatically result in twins or triplets.
If you give your female Sim a massage using the Infinite Zen Massage Table (available in The Sims 3 Store), she will get the "High Fertility" moodlet for 24 hours. Trying for a baby during those 24 hours will result in twins or triplets.

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How do I have triplets in the Sims 3?

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The traits of being Family Oriented, Natural Cook, Handy, Lucky and Romantic should help your Sim. Watch the kids channel on your TV in the Sims, listen to kids music and buy fertility treatment for both parents.

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My Sims have had "Woohoo" twice but still are't pregnant. Why is this?

September Kordelewski

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Was it "woohoo" or "try for baby"? "Woohoo" is when Sims don't have children from the deed. "Try for baby" usually does the trick.

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Do both parents need the fertility option to have twins?

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Not always, it is possible to play only the mother while having the fertility option and have either triplets or twins.

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Tips

Your Sim will get the "Sore Back" moodlet while pregnant. A massage from either the spa or someone with whom she is romantically involved should cure this for a time.

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Make sure you read a pregnancy book while your Sim is pregnant. If you don't have a pregnancy book in your home, remember that there is a library and a bookstore. Once you finish reading the pregnancy book, it will let you pick two traits when your baby is born!

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Make sure to keep track of how many Sims will be in your household or you may not be able to get another Sim pregnant for a long time.

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If overwhelmed, don't feel bad utilizing testingcheats! Type "testingcheats enabled true" then sell or delete excess infants you didn't intend via buy mode. It's OK to correct surprises, especially with higher-order births!
Get creative combining lifetime rewards and elixirs! For example, use the Fertility Treatment reward then drink a Procreation Elixir from Supernatural. Stacked bonuses make higher multiples more likely.
When expecting multiples, temporarily move extra household Sims out until babies transition to toddlers. Fewer permanent residents means more infant slots open. Then move everyone back together.
If short on funds, stash extra household items and furniture in family inventories pre-birth. Having gear already purchased cuts down initial baby expenses. Just unpack as needed later.
When pregnant, keep mood levels high since that influences the number of traits you can pick for babies. A very happy mom-to-be means more flexibility designing your new additions.

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Warnings

If you don't have enough space in your household for more than one child, your Sim cannot have twins or triplets.

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If your Sim is unhappy or sad throughout the pregnancy, she'll have kids with negative traits.

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