What was the time it took Gordon to get from the beginning of the story (anomalous materials facility of Black Mesa) to the Nihilanth? I believe he arrived in the morning but I don't recall walking around outside during night. Was it just another day at the office?

  • See qntm.org/hl
    – b_jonas
    Commented May 5, 2012 at 22:25
  • @b_jonas: Looks interesting. Why not extending your comment into a proper answer?
    – bitmask
    Commented May 6, 2012 at 0:09
  • I don't know enough about the half-life universe, so I'd rather not try to interpret the sources and give an answer. Sorry.
    – b_jonas
    Commented May 6, 2012 at 17:22
  • Here's another link that may be of interest: members.shaw.ca/halflifestory
    – user6195
    Commented May 8, 2012 at 0:19

1 Answer 1


I believe the game takes place over a span of two days.

When Gordon goes outside past the rocket pit in chapter 8 (On a Rail), it is dark out:

Rocket pit outside

In the next chapter Gordon is captured by the assassins. I would guess he was out for multiple hours, which is why it's light outside when he escapes:

Rocket pit outside

Gordon then goes on to work through the facility some more, to the scientists, and then to Xen, all of which probably doesn't take more than a day.

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