> it is ok to translate games for kids
Big thing that lets my father (factory worker who's 50 years old, no languages other than his father's one) enjoy Playstation 4 is the fact that Sony does insane amount of work to make as much as possible translated to Polish language. The Last of Us as well as Uncharteds which in no way are games aimed for kids received full polonization. WipEout Omega Collection has been polonized as well. Same goes for 3rd parties - Bethesda's games are fully polonized (this includes Fallout's, DOOM and Skyrim), CoD's are polonized, EA's games are polonized (Mass Effect's, NFS), etc. ect.
There are many adult consumers who are more comfortable with media in their native language for one reason or another.
Blizzard even went as far as to declare that every game they'll release will be localized on level that would make it par on native production. They are going so far with it that they are replacing US-specific jokes with local ones.