Possible Duplicate:
What are the relative literacy rates in for simplified and traditional characters?
Just wondering what language to use in game menus, buttons, and settings.
Possible Duplicate:
What are the relative literacy rates in for simplified and traditional characters?
Just wondering what language to use in game menus, buttons, and settings.
The answer is probably you'd better prepare 2 versions of translation for the game menus/buttons to better sell your game.
However, either Simplified Chinese or Traditional Chinese is OK, since most of the case you could use a locale converter such as AppLocale under windows to convert different encodes. But if the game cannot use such tools, better prepare 2 versions.
As for the Classical Chinese, it depends on your game type, if it's an RPG, maybe some of the poem/idiom can be translated to Classical Chinese.
If you are asking about China only, then it is Simplified Chinese(SC).
All of main-land China us SC, except Hong Kong, which use Traditional Chinese(TC).
Taiwan (if you consider it part of China now) also use TC.
2011 Population (Worldbank.org):
China 1344M
HK 7M
Taiwan 23M