I'm currently playing one of Sega's Yakuza games for the first time. The game itself I'm not crazy about, but the attention to detail in the environment is incredible.
The thing those games do is what a lot of Western games do (ie GTA): create a convincing environment. So, if you've never set foot in Japan, but played Yakuza, you'd feel familiar with the cityscape, the downtown core at least, if/when you came. It's really incredible what they've designed.
I'm not so interested to see the played out tropes of Japan (ninjas, samurai). I might enjoy it if done extremely well (Assassin's Creed?) but I'm not begging for it.