A South Korean man who played computer games for 50 hours almost non-stop died of heart failure minutes after finishing his mammoth session in an Internet cafe, authorities said on Tuesday. The 28-year-old man, identified only by his family name Lee, had planted himself in front of a computer monitor to play online games on Aug. 3. He only left the spot over the next three days to go to the toilet and take brief naps on a makeshift bed.