App of the Living Dead (Gamer Squad 3)

After what they've gone through, Bex and Charlie have no intention of playing the new zombie game that Veratrum Games Corp just released. But everyone else is hooked, and when a flu turns all the teachers and students into the undead, it seems that only non-players are immune. Now, it's up to Bex and Charlie to save their town--and stop the company from unleashing more deadly games.