Sims 4 Alien Pregnancy Guide: Have an Alien Baby! (2023)

I wrote about this in my previous guideHow to get abducted by aliens in The Sims 4. But what if your Sim comes home pregnant with an alien baby?

In this guide, we cover all aspects of alien pregnancyDie Sims 4– from pregnancy to handling your new arrival.

How to get pregnant with an alien baby

In order to get pregnant, your Sim must be kidnapped. Since I have an incomingInstructions for kidnappingalready, I won't go into too much detail here. But for the sake of completeness, here are the basics:

• Go outside at night between 10pm and 4am for a chance of being kidnapped.
• Increase your chances by joining the scientist career and using the satellite dish to contact aliens.
• When your Sim reaches level 7 Logic, they can use Search for Truth in the Observatory to increase the chances even more.

Male Sims have a 25% chance of returning pregnant from a kidnapping. You'll know your Sim is pregnant if they have the Strange Stomach buff when the spaceship drops them home.

This mood is instantly present, along with the regular abduction mood.

If your Sim is abducted by aliens and becomes pregnant, they will be "pollinated" by Senior Pollination Technician #3. This NPC is a female alien who kidnaps male Sims and impregnates them with alien DNA.

Have an alien baby with cheats

You can also cheat on your Sim when you are pregnant with an alien babyMC command center(a highly recommended mod for this game). Click on your Sim and choose:

MC Command Center > MC Pregnancy > Start Alien Pregnancy

Enter the number of babies to generate (maximum three) or leave them random. Senior Pollination Technician #3 is the second parent as if your Sim was kidnapped.

Pregnancy begins immediately. This is a good way to have an alien pregnancy quickly if you're creating a save file or just need one for story purposes (or if you just don't want to wait for an abduction).

Alien pregnancy trimester

Male Sims "give birth" 72 hours after abduction. Just like female pregnancies, they have three “trimesters.” However, different moodlets mark the trimesters.

The Strange Stomachache Moodlet lasts for 24 hours after your Sim returns. This is the first "trimester" of pregnancy. Your Sim has a small baby bump and will occasionally touch their tummy while a green light emits and a spooky sound is heard.

After 24 hours, the “Weird Weight Gain” moodlet replaces a weird stomach ache. This takes another 24 hours. During this second "trimester" of pregnancy, your Sim's baby bump will only get bigger.

After another 24 hours (48 hours total), the Abnormal Body Changes Moodlet replaces the weird weight gain. This marks the third “trimester”. Your Sim will have their third bump and look like they are 9 months pregnant.

After another 24 hours (72 hours total), the Imminent Close Encounter moodlet replaces abnormal body changes. That means he's in active "work" and ready to drive that alien spawn away! A notice will also appear that your Sim is in labor.

Birth of an alien baby

Once your Sim goes into labor, they have two choices - to have the baby at home or in the hospital. You also have the option to join your Sim in the hospital or send them alone.

home birth

To have the baby at home (where nobody asks questions), buy a bassinet, click on it and choose "have baby".

Your Sim will go to the bassinet (so make sure they can reach it). He'll hold his stomach and make some contraction sounds for a few seconds. You will then be prompted to name the child (or children if you have twins).

Next, your Sim will turn around and the alien baby will appear in their arms. Congratulations!

birth in hospital

To have the baby in the hospital, click on your Sim and select "Having the baby in the hospital". You have the choice to join him or send him alone.

If you send him alone, he will leave the premises. A few minutes later, a prompt will appear asking you to name the baby. Your Sim will return to the lot and the baby will appear in an alien cradle in the house.

If you join him, you will be transported to the hospital compound. A prompt will allow you to select friends or family members to accompany you with your Sim at this time.

A few seconds after arriving at the hospital, your Sim will change into a hospital gown and head to the delivery room. A doctor will arrive to deliver the baby.

Your doctor knows what she's doing... sort of. But no matter what, you're taking home an alien baby!

Next, a prompt will appear asking you to name the baby (or babies if you have twins).

After the "delivery" the baby appears in the bassinet in the delivery room. Your Sim will cuddle the baby, and when you didparenting, he learns parenting skills through this interaction.

The baby will disappear from the hospital, but it will be there when you get home. You also get a cute Alien Birth Certificate to hang on your wall as confirmation that you do in fact have alien offspring.

Send an alien baby back to the home world

If you don't want to keep the alien baby after birth, you have another option. Send it back to the homeworld (Sixam) where it will be raised by its alien family instead.

Just click on the baby and select Send to Homeworld.

You will be asked if you really want to send the baby back to the home planet. If you do, you'll never see the baby again, so make sure you do itYes, reallywant to do this. There is no way to retrieve the baby once it's gone.

If you select "Return", a beam of light will appear and beam the baby away, leaving you with an empty cradle.

You can still change your mind and choose Keep if you want to raise the baby.

alien genetics

When a Sim is abducted, the baby they give birth to is 100% alien - not a hybrid.

The baby will have an alien skin tone and full extraterrestrial powers when it grows up. Even though it shares its DNA with its human father, it just doesn't look like it.

If this baby grows up and has a baby with a regular sim, it will always be a hybrid. Only two aliens or two hybrids can produce a full-fledged alien child. And when two hybrids breed, there's only a 33 percent chance of getting a full alien.

Taking care of your alien baby

The game treats alien babies the same way it treats sim babies. They need to be fed, changed and socialized.

One key difference, however, is the sound of their scream. Alien babies have a metallic sounding cry that I personally find incredibly annoying! It can really get on your nerves, so take good care of your little one to avoid it.

And even though your Sim is male, he can breastfeed an abducted baby if he gives birth! (I'm not sure where the milk comes from.)

As for the game, there is no difference between bottle feeding and breastfeeding, so choose the one you like the most.