Cry of Fear is a single-player, horror modification of Half-Life, made by Team Psykskallar, creators of Afraid of Monsters modification.
"You wake up in a dark alley, not knowing anything. What has happened anyway? You struggle after the truth and answers. Answers you want to know in the darkness and fear, which makes your heartbeat race like violent blows against your head. Where do "they" come from? What has happened? Are you just turning insane? The time is up; you can't stay there reading your smses forever. It's time to head out and find the answers."
- ―Official Cry of Fear website.