Kim Kyung-jae died after playing non-stop for 86 hours
More than half the population has access to the internet, and there are more than 25,000 cyber cafes - known here as PC Bangs - which are open 24 hours a day across the country.
The country is a global leader when it comes to number of people who can access broadband, or high speed internet services, with the number of broadband subscribers exceeding 10 million.
It is a paradise for online gamers, who come from all over the world to play in South Korea.
The government has been behind efforts to promote South Korea as an IT and cyber leader. But the more negative impacts of over-reliance on the web have only been recently acknowledged and are starting to be addressed.