Fans of the Aliens movies and Alien: Isolation should appreciate an easter egg discovered by Prima Games in the Basement level in Alien Isolation. A book left behind in Sevastopol by the title of "The Secret Path" by Butch Jonsie is the hidden item in suspect.
"...you'll find [the book] in the first Survivor Mode map, The Basement. When you begin, walk through the short corridor and immediately turn left. You'll see three books with the following titles: War in Totality, While the Crew Slept (we'd love to read that one) and finally, The Secret Path. The latter was written by Butch Jonsie.
Now for all we know, there might be a Butch Jonsie on the development team, or maybe he's a relative. Alien fans, however, will immediately think of the orange cat that starred in the original film and made a brief cameo in Aliens.