Cause Of Death: Multiple Stab Wounds
Game/console Responsible: Mir III

In 2004, a Chinese gamer named Zhu Caoyuan was stabbed to death by fellow gamer Qiu Chengwei. Qiu had lent Zhu a virtual sword from the game Legend of Mir III and his homey turned around and sold it in an online auction house. Dick move, yes, but when Qiu found out he tried to file a police report, the cops told him to, understandably, piss off because the sword didn't actually exist. Qiu stabbed Zhu once in the heart and is now behind bars in a Chinese prison sentenced to death.