6 for the PS3.
4 Players
2 players
1 player
only one
Up to 8 in any given household, but as many as you want in a town or in your library, Also, there are several mods you can find that will allow up to 24 sims/pets on your portrait panel that you own. If you want, you can find a reliable site and download a portrait panel mod yourself.
no the sims 3 is still only one player
no.
Maximum of 8 Sims in one Family
2-4 Players are Playable in Multiplayer Mode.
no, the sims 3 is still only one player like the sims 2. Edit, Sims 2 was two players
In the Sims 3 base game, there are only two worlds. You can download Riverview from the Sims 3 site, but you must have a account. However with most new Expansion Packs a new world is released which you can play in. With the additional option of the Exchange, where you can get worlds created by other players using Create a World, which you can also download from the Sims 3 website, there are almost infinite worlds for Sims 3, and certainly more than almost every single computer in the world can handle.
From what I know it is 4 players for both ps3 And xbox360