Honorable Mention: Stroggification – Quake 4
This isn’t really a horror game, but the scene in Quake 4 where you and a bunch of other folks are strapped to a conveyer belt to join the Strogg collective is worth mentioning here. The worst part isn’t even the forced implants and limb removal your character endures, it’s seeing it happen first to the guy ahead of you that makes this scene especially memorable.
This is more or less a follow-up to a similarly themed list I wrote last May, so before you try and set me straight in the comments for missing something, I recommend checking it out to make sure it hasn’t already been covered.

