You are Gordon Freeman, formerly a scientist at Black Mesa Research Establishment, now reluctantly employed by a mysterious organisation as a troubleshooter. (They send you out looking for trouble, and when you find it, you shoot it.) You are contacted by the Man in Blue. He seems strangely worried; something has ruffled his normally impenetrable character. "Mr Freeman, we need your help urgently. It seems that somebody at Black Mesa has been experimenting with ... unconventional applications of the dimensional gateway technology. They have developed what appears to be a working time machine. "Unfortunately, the scientists who were working on it disappeared before we could ... persuade them to turn it over to us. It appears that we were not the only ones following their work from behind the scenes. A renegade organisation within the US Marine Corps got to them before we did, and used their technology to travel into the past.. Gordon Freeman against Naziz. Author: Ross Smith
This review may contain spoilers
Over the years I've played many Half-Life SP mods. Ross Smith's Timeline series is one of the two most memorable (the other being Neil Manke's They Hunger) and that I like to replay.
It's an old series (1999ish?) so the graphics might not be up to par with what most people expect today, but it excels in delivering a fun adventure through time and imagination. You visit the height of the Roman empire, the Egyptians, go far into the future where the Earth is a fiery cinder and even further when its a cold dead rock.
Looking for a fun SP mod that'll make you wonder where the hours just went? You've come to the right place.