SAS: Zombie Assault 4 — Black box
Question: Where can I get a black box? Well, or where can I buy it? I searched a lot but can't find answers. Please help! Thank you in advance!
Answer from SCARATOR: Black boxes are given as a reward for 1% top during Last Man Stand and Apocalypse events in multiplayer. If you get gold or above places during these events then there is a small chance of box keys drop. Or you can get the keys in Nightmare mode after your character will get level 35.