How does Penumbra compare to Amnesia?

[Yuhaney]

I'd say Penumbra will always be somewhat special game for me, because it was pretty much first horror game without weapons that I can remember.

I'd say that today it has dated graphics, but not too dated to still be scary since the sound environment is excellent. Story is also good when you start to get immersed into the gameplay.
Seeing Penumbra Collector Pack on Steam for 4,99€ is a price that I would pay for two good games (expansion included). No doubt.