Oh yes, I think when it comes to such argument there can be a 'greatest'. You can't possibly say that Zynga has achieved more in the gaming world more than Valve or Rockstar. So the other two is 'greater'. It's very loose though, as there is no real way to measure achievements. So just cast your own opinion.
I wanted to have a list of noted RPG games by each developers, but the damn list is too damned long. Especially Square's.
I wanted to have a list of noted RPG games by each developers, but the damn list is too damned long. Especially Square's.