Yes, it’s an actual time limit a la Fallout. Once you’ve read this edict, a counter pops up at the top of the screen informing you how many days are left until all life is extinguished. Time passes whenever you leave to go to a new area (a.k.a. when traveling), and if you don’t accomplish your goal before the eight days is up?
“The game ends,” said Heins. “If you are really good and know where to go you absolutely can do everything in that eight days, though it starts getting tight.”
“We wanted the replayability and playing different paths though, and having a time limit creates a sense of urgency that maybe you don’t want to do everything. And with Kyros and the Edicts,” he continued, “we wanted to add some visual presence. The time limit felt like a good way to show this is actually urgent.”