StarCraft

The game has enjoyed worldwide interest but has had particular popularity in South Korea.

An excerpt from the article 15 facts about StarCraft

At the beginning of the 21st century, StarCraft games began to be broadcast on South Korean television. They were so popular that it was decided to create a separate station - Ongamenet (OGN), and at the time of their greatest popularity, they were broadcast by as many as three channels - around the clock.

Nowadays, the broadcasts are available on the Internet and still gather many viewers.