Game Reviewers are the dead corpses of unknown players over time. When the dead corpses started to stack, Sim9 and other experimentors decided to condense the players into blocks. But when that failed, an outbreak of a modulated and modified strain of Zombie Virus attacked the corpses. It turned them into the near perfect sub-humans called "Game Reviewers". They despised Humans eversince and are always dangerous to face without a weapon.