Hört sich so an als wären es nur die Thailändischen und Russischen Versionen.
Der Rest wird unberührt bleiben.
ZitatOrange box is only restricted for Thailand and Russia. bascially because it is drastically cheaper in those places than everywhere else. Same with other Valve games.
Third party games are on a case by case basis and basically, if they don't show up on Steam for you, they aren't for sale in your area.
And yes, Steam works perfectly well in Japan.