How many games were made for playstation 2?

Sony says that over 10,000 software titles were made worldwide, now that counts a game as different if it is in a different language and maybe also if it is a different version. That could mean that all the GTA varieties could be counted as over 50 games when others might only count it as different if the title changes. But see if your not mad if someone sends you the game without the latest maps characters songs and other DLCs included and tells you it's the same game when you purchased a better newer game version.