Amnesia Length?

[Thomas]

It is kinda hard to judge as it depends on how you play. We have tried to ignore any thoughts about making the game of a certain length and instead focused on giving a certain experience. Quality over quantity in order words.

That said, beta testers have reported around 7 - 10 hours.

Also note that there is commentary and game is bit different depending on how you play and choices you make. These should give at least some replayability, in case you are looking for value.