Virtual Insanity by Charlie Dalton

Four friends celebrate a stag weekend at Virtual Insanity, a cutting-edge virtual reality company.

Built on a disused military research facility, the futuristic headsets scan existing landscapes and re-imagines them with post-apocalyptic environments.

They battle zombies, overcome obstacles, and fight to stay alive.

But when one member of the team falls off the grid, he uncovers a secret even the game’s designers aren’t aware of.