In no other major medium do people from all over the world make and enjoy each other's work as much as in games. Sure a few international movies might break through in America and even songs to a lesser extent but studios worldwide all make games that people the world over enjoy. It's somewhat unique in that way probably because localization and translation is much less obtrusive and easier with games. Perhaps this is becoming less true with services like Netflix seeking out cheap exclusive content but I still feel like in most other media people generally consume things produced in their own country.