While there are plenty of great scary moments from horror games like pyramid head and the haunted mansion from Vampires the Masquerade Bloodlines I find that some times the scariest moments can come from non-horror games were you don't expect it. So share any experiences you may have like this here.
For me I find that the first time playing through the first couple chapters of Half-life to be unnerving. Not knowing what kind of alien is going to drop from the ceiling in the next room or what unspeakable horrors will you see happen to your fellow scientists. It certainly got me on edge. Plus the game is so damn quiet it just adds to the shock when the next thing jumps out at you.
For me I find that the first time playing through the first couple chapters of Half-life to be unnerving. Not knowing what kind of alien is going to drop from the ceiling in the next room or what unspeakable horrors will you see happen to your fellow scientists. It certainly got me on edge. Plus the game is so damn quiet it just adds to the shock when the next thing jumps out at you.