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...
Very good, short and sweet. Decent challenge, and the design does justice to Valve and its game.
One problem: Long load times (although the levels are long) and lag spikes I had when dying, particularly towards the end. (won't say what makes the end special)