Amazon's game-broadcasting and social-video company, Twitch, is stepping up efforts to expand its presence in the nation that invented Mario, Pokemon and the PlayStation.

Twitch, which is currently participating in the four-day Tokyo Game Show that runs until Sunday, recently opened its Japan office and began localizing its platform for the Japanese audience. While still relatively unknown here, the service is considered one of the world's largest live-streaming video platforms, boasting nearly 10 million daily active users and over 2.2 million unique streamers.

In Japan, however, it will face stiff competition from existing players and will have to tackle a gaming culture unique from that in the West.