The Sims 4: Alien Transformation Guide
The Sims 4: Alien Transformation Guide
How to Make Your Sim an Alien in The Sims 4

The Sims 4 is all about embracing the supernatural, and few things are as out-of-this-world as aliens. With their mind-bending powers, ability to disguise themselves as humans, and even transmutation skills, aliens bring a whole new level of fun to the game. So, if you’ve ever wondered if you could make your Sim an alien, you’re in luck! Let’s dive into the extraterrestrial world and find out how you can create an alien Sim.
Quick Links
- How To Make An Alien in CAS
- How To Have An Alien Baby
- How To Get Abducted By Aliens
- How To Have An Alien Baby Through Woohoo
- Use A Cheat Code To Create An Alien Sim
- Use A Mod To Create An Alien
How To Make An Alien in CAS
The absolute easiest way to create an alien in The Sims 4 is to start from scratch in Create-A-Sim (CAS). You’ll need the Get To Work expansion, as it introduced aliens to the game. When you’re in CAS, simply click the button to add a Sim to the family, then select “create occult” and choose “alien.” Voila! You’ve got yourself an alien Sim.
Creating an alien Sim in CAS gives you complete control over their appearance, including their human disguise. This is by far the best way to make an alien in Sims 4 since you’re not limited to what the game randomly generates for you.
How To Have An Alien Baby

If you want to add an alien Sim to your existing family, there are a couple of methods available. The most straightforward way is to have a Sim give birth to an alien baby. To achieve this, you have two options: get your Sim abducted by aliens or have your Sim woohoo with an alien.
How To Get Abducted By Aliens

To increase your chances of getting abducted by aliens, your Sim should be male. Female Sims can also get abducted, but all they receive is a moodlet. Additionally, joining the Scientist career significantly enhances the likelihood of being abducted by aliens. Scientist Sims have special objects that further increase their chances, such as the satellite dish, Out Of This World desktop, the wormhole generator, and space rocks.
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Once abducted, your male Sim has a 25 percent chance of returning pregnant. Keep trying, and eventually, you’ll come back pregnant with an alien baby. The pregnancy experience is similar to a regular Sim pregnancy, complete with custom moodlets. When your Sim finally gives birth, their offspring will be a pure alien with all the alien powers and a human disguise.
How To Have An Alien Baby Through Woohoo

If you prefer a less invasive method, you can always find an alien Sim and have a baby with them, just like any other Sim. Aliens exist among regular Sims, cleverly disguising themselves as humans. Don’t be too suspicious, but any townie that doesn’t match the known premade Sims could be an alien in disguise.
To locate an alien, try triggering their intense mood, as alien Sims in an intense mood will start to glow. Another option is to ask for and analyze their DNA, which will reveal an alien Sim upon scanning. Using the Scientist career satellite to scan the town can sometimes help you identify an alien. If all else fails, you can always take a leap of faith and try to woohoo with a Sim. The game will make it clear if your partner happens to be an alien.
When having a baby with an alien, keep in mind that it might not be a true alien baby. Sim-alien hybrids are common outcomes, featuring funky skin tones, eyes, or even pointy ears. However, they won’t be able to disguise themselves as regular Sims. On the bright side, hybrid Sims do get to have real hair. If you want a higher chance of having a pure alien baby, it’s best to pair two hybrid Sims together.
Use A Cheat Code To Create An Alien Sim

If you want to transform an existing Sim into an alien, you’ll need to rely on cheat codes. While there’s no direct way to achieve this through gameplay, you can simulate it with cheats. By entering “traits.equip_trait trait_OccultAlien” in the cheat console mode after enabling testing cheats, you can give any Sim the hidden trait of being an alien. Then, by altering their disguise in Create-A-Sim, you can fully realize their alien form.
Use A Mod To Create An Alien

If you desire even more control over your new alien’s appearance, consider using mods. Unlike cheats, mods allow you to customize the alien form in a more detailed manner. Start by installing the MCCC (Mc Command Center) mod and save your alien Sim to the library. Add a copy of the alien Sim to the family, ensuring you have one with their alien appearance and one with their human disguise.
Once in the family, go to the MC CAS menu, where you can copy and paste characteristics between the human version and alien version of your Sim. This process allows you to create an exact copy of your alien’s disguise, ensuring their appearance remains consistent across both forms. A similar technique can be used to give your alien Sim pointy ears in their human form.
With these methods, you can fully embrace the extraterrestrial side of The Sims 4. Whether you prefer playing as a pure alien or experimenting with hybrid sims, the possibilities are endless. So go ahead and explore the intergalactic world of alien Sims!