Freak-Quency

Freak-Quency, known to most people as a popular virtual reality game. So, why is it that so many of its players are being killed? It doesn't help that your brother is missing, and turns out to be an avid Freak-Quency player. Where is he? Is he dead? Alive? Just why are all the Freak-Quency players dying?

[Edited from Sakon04's Deviantart]