Need an Origin Account.
Basically EA is ending support for The Sims 2 (as The Sims 4 is about to launch), except for The Ultimate Collection. So in an effort to get everyone to migrate to it, they are giving it away for free
http://help.ea.com/en/article/how-to-get-the-sims-2-ultimate-collection/
Not exactly RPG related, although you could make the case for The Sims being one. Also has a fancy house design tool which can be somewhat useful