You can also cheat your Sim pregnant with an alien baby if you have MC Command Center (a highly recommended mod for this game). This NPC is a female alien who abducts male Sims and impregnates them with alien DNA. When your Sim is abducted by aliens, if he gets pregnant, he is “pollinated” by the Senior Pollination Technician #3. This moodlet is present immediately, along with the regular abduction moodlet.
A male Sim is pregnant when he has the “weird tummy ache” moodlet. You’ll know your Sim is pregnant if he has the “Weird Tummy Ache” moodlet when the space ship drops him back at home. Male Sims have a 25 percent chance of returning pregnant from an abduction. Female Sims can only become pregnant if you use a mod – like MC Command Center.
Tip: In The Sims 4, only male Sims can get pregnant with alien babies.
