You should be a teen to play the sims 3.
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If you are talking about My sims in wii and DS the the answer is 3+ If your taking about sims 2 or sims 3 the age is 12+
I enjoy playing the sims 3 myself and I ,to wish that you could age down and that is impossible,only on the sims 2.
Babies do age up in the sims 3 generations :P
go to the app store and type: 'the sims 3'
The graphics are different, in Sims 3 there are no loading screens and the Sims age even if you aren't playing them, Sims 2 you can follow them into public lots in Sims 3 you can't. and on the Sims 2 you can see the Sims naked but on the Sims 3 they blur it out
you can buy a cake and then use it
you have to be 12+
By puting them on the middle of the chart befor you move hope this helped.
yes they can:)
By waiting days and you will reach a point where you will age.