Yeah, I'd have to say I Have No Mouth and I Must Scream. Fantastic setting.
I'd say Manhunt 2 was pretty dark too. --- PC is the only place to play games at their true potential 1080p/60fps standard, upgradable, mods, FOV sliders, ultra graphics - it's backwards compatible too
Silent Hill by a long shot. Murder, suicide, euthanasia, child torture, fetus eating, and thats all on a good day in Silent Hill. --- Side-Scrolling Platformers:1986-1995, Survival Horrors:1996-2005, First Person Shooters:2006-2015
Final Fantasy Dissida. All main final fantasy heroes and villains are pitted, unwillingly, against each other in a never ending battle where even death would allow you to escape. The longer it goes on the less trust the warriors have in Cosmos and Chaos. It takes 13 cycles of death to finally end this conflict. --- Endure and Survive