Box art - Prey (2017)

Prey (2017) Dr Thorstein’s Safe Code

While in the Hardware Labs level of Prey, you may come across a safe in Dr Thorstein’s office.

The code for this safe is 9954. You find this code by viewing the sticky note in this office that says “Es & Xe.” This refers to the elements Einsteinium and Xenon, which have the atomic numbers of 99 and 54, respectively.