there is one version of the sims 2. however, there are lots of expansion packs (8 in total) and also stuff packs (8 in total) if by versions you mean like the sims 2 and the sims 2 double deluxe, the...
You can have as amny as you want. Each female adult sim has 30 days in which she is able to produce children. So timed carefully she should b able to have ten single births. If you own the OFB...