How do you make a virtual family?

well to get twins you usually need to get the baby boost, the baby boost can make you have: more chance of getting a baby, twins, or even triplets! as you would see the baby boost is quite a lot of...

you need to keep trying, the game will chose twins automatically.

Drag the parents(mother or father) on top of eachother. Sometimes it will say "arguing about having a baby." Keep putting them on top of eachother.

Go on the home menu,and press yes on reverse day/night.

My first generation actually had triplets and adopted one girl. It happens randomly and the males status had actually said he didnt want kids but ended up with four