X owner Elon Musk livestreamed himself on the microblogging platform while playing video game series 'Diablo'. "Testing game streaming...[I] am in the Diablo PvP arena for ~10 mins if anyone wants to kill me," the world's richest man posted. Later, he said, "Tested the X video game streamer system last night. It works!" He streamed himself using open-source programme OBS.