Game guide:Making a child or younger live alone

How to do
In Sims 2 Move your family to an apartment lot. Do not rent in any of the apartments. All you just do is to kill the members of the family except the child. A social worker won't come even if you stay long enough. You can now move the child to other lots, living alone or not, if move him/her to an existing family.

In Sims 3 There are two ways of making a child or younger live alone. The first way consists of killing off the parents, then play the child again straight after it gets you off the household. Notice the babysitter will stay no matter what. The second way consists of playing another household and make the parent of the desired household with the child the player wants to live alone. Make the parents join the household through "testingcheatsenabled true", then go on to the newly alone child.

Cautions
When aging from Toddler to Child, unless you didn't do this before the toddler was trained toddler skills, you can't choose a trait. This is due to the babysitter not being programmed to teach them.

If you go into Edit Town, you can't play the alone child again.

If a child throws a party with a toddler in the household the babysitter will leave. However, this can make the child totally alone.