You are sent to Phobos IV which has a deadly virus.
Fortunately, there is an antidote. Less fortunately, creatures from Xen have taken control of the base.
Follow the on screen instructions and use your ammo VERY carefully.
- Title: Phobos IV
- File Name: hl1-sp-phobos-4.7z
- Original File Name: phobos4.exe
- Size : 5.89Mb
- Author: Pavel Koten
- Date Released: 22 December 2002
- Copy the phobos folder into your Half-Life folder.
- Restart or start Steam.
- Phboso IV should now be listed in your Library tab.
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WARNING: The screenshots contain spoilers.
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