On the subject of FFXIII, there are two other names that have been patented by Squenix, both to do with Fabula Crystalis Nova. One is Haerisis, and the other begins with D.
I was just sharing that bit of information with Kagom and anyone else wanted to know - he mentioned that he'd be getting FFXIII and Versus, so I thought I'd share it.
If I was going to skew the thread off topic completely and start a whole discussion on FFXIII then I'd have made a new topic instead.
I think that the original Grand Theft Auto was the first of its kind.
When GTA3 came out other companies began to copy it and make their own sandbox games with the same themes, except better.
Now GTA4 is coming out, R* have done everything they do well, but seemingly better. Give it a few years and you'll be seeing other companies once again emulating a GTA game and bringing out their own, better version of GTA4.