I recently stumbled across this Half Life 1 Mod while playing Sven Co-op. I downloaded it and started playing. It's actually a decent scare, even with HL1 graphics. They made some improvements in it. I like this game, but it gives me the chills while playing. Official Website The beginning gets a little frustrating, but once you get going, it gets better.
Funny, I installed this a few months back and played through it for a few hours before getting to the part where you have to turn off the power and you are left in the dark. I kept on getting mauled by those zombies over and over before I got past it. Also, the zombies heads have a serious glitch where they pivot around in random directions, it looks really creepy.
Actually, the developers left those in on purpose as well as many other weird body distortions just to make it that much creepier. Every time I see something in the dark, even with my flashlight, it gives me chills. Also, one of the zombies has a Mario cap.
