"Theory" is an intense first-person shooter (FPS) game set in a post-apocalyptic world overrun by hordes of ravenous zombies. Players find themselves in a vast, desolate landscape. As a survivor, you'll navigate through various environments.

"Theory" is an intense first-person shooter (FPS) game set in a post-apocalyptic world overrun by hordes of ravenous zombies. Players find themselves in a vast, desolate landscape. As a survivor, you'll navigate through various environments.