Zombie Outbreak Simulator for Android now available!   Check out the blog post and get it on Google Play!

The final, most interesting layer: The downloaded ISO is not an installation. It is a .

Let’s demystify the term. An (named after the ISO 9660 file system) is essentially a digital snapshot of an entire optical disc. It’s a single file that contains the entire operating system—the kernel, the desktop interface, the software installer, and the file structure.