He tried 'Alt-F4'.
He moved the mouse. The character turned. He was looking at himself, sitting in the chair.
At first glance, it sounds like magic. The original Call of Duty 2 (2005)—a landmark first-person shooter that defined the WWII genre—requires roughly of storage space. The idea of compressing that game down to the size of a single MP3 song (10 megabytes) defies not just convention, but the laws of information theory itself.