A South Korean man has died after reportedly playing an online computer game for 50 hours with few breaks.
The 28-year-old man collapsed after playing the game Starcraft at an internet cafe in the city of Taegu, according to South Korean authorities.
The man had not slept properly, and had eaten very little during his marathon session, said police.
Multi-player gaming in South Korea is extremely popular thanks to its fast and widespread broadband network.
Games are televised and professional players are treated, as well as paid, like sports stars.
Professional gamers there attract huge sums in sponsorship and can make more than $100,000 a year.
The man, identified by his family name, Lee, started playing Starcraft on 3 August. He only paused playing to go to the toilet and for short periods of sleep, said the police.
"We presume the cause of death was heart failure stemming from exhaustion," a Taegu provincial police official told the Reuters news agency.
He was taken to hospital following his collapse, but died shortly after, according to the police. It is not known whether he suffered from any previous health conditions.
They added that he had recently been fired from his job because he kept missing work to play computer games.