Multiplayer/Co-Op & Frictional Games? NO!!!

[Conan]

Look, let me say up front that, maybe with the exception of Left4Dead, co-op and mp are vastly overrated in the gaming world.

Now that I've gotten that out of the way, if Amnesia had co-op it would have to be done right. One scheme that might work is to keep the players isolated in different parts of the castle, and to allow them to talk over headsets (similar to what The Scariest Places on Earth series did). Hearing your friend screaming through your headset may amplify the terror, plus the fact that you can't help him/her.

But then again, some games are best experienced alone.