Routine looks like it might be the next Amnesia: The Dark Descent in regards to horror that sees mass appeal. Perhaps that is presumptuous to say, but it really does appear to be getting quite the reaction despite having only just released an alpha gameplay trailer today.
In case you haven't heard of it yet, Routine is a horror game based on an abandoned moon base. Players explore the uninhabited (or not) environment in all its creepy splendor. Alongside the trailer, it was also revealed that the game will have Oculus Rift support. That will no doubt be far too scary for some people out there, but a great experience for others.
The trailer looks quite good but recall that it's only alpha footage. Watching it should give you a good taste of what the game is set to offer. Thankfully, Routine already passed through Greenlight so it has secured a Steam launch for later this year.