Re-enter the Half Life Universe and revisit City 17 in the time before Freeman, in this fan made single-player mod. The Resistance is threatened by a decisive Combine assault, and as a wanted Resistance member you will need to fight to escape from the Combine's clutch. At the same time, a mysterious force is working towards ends unknown...
Even though this mod last only about an hour, it is one exceptionally high quality hour. The environments are beautiful and fit right in. The games shortness is due mainly to avoidance of unnecessary areas. All of the firefights are exciting and extremely memorable. One would think that this mod was headed by Valve secretly as the levels are of such a high quality. If I had to dock any points it would be that during the ending hunter battle, I ended up sprinting past all the combine in my attempt to kill the hunter before it got away. Still, this is an amazing mod and I would recommend it to any fan of Half Life.