Nightmare Fuel / Call of Cthulhu: The Wasted Land

• The whole premise. World War I is already enough nightmare fuelish by itself, so, mixed with a classical Cosmic Horror Story setting... And the, even if the Investigators survive the events of the game, the campaign is set in the beginning of 1915. There's still three years of slaughter to come, which could be even worse than in our reality, as Cthulhu Mythos actually exists in this setting. If someone like Kaul tried to weaponize Cthulhu Mythos' entity, he probably won't be the only one.
• The "It's a Long Way to Tipperary" cover used in the Main menu screen and the trailer sounds quite distorded, with a creepy result. For better effect, it's of course the first thing you hear when launching the game.
• The first Timed Mission doesn't even need to have supernatural elements to be scary. After leaving a crypt in which the Big Bad tried to lock them, they emerge in the middle of a half destroyed town without knowing where they are at first. Hill quickly identifies the place as a target of a British bombing scheduled for the same day...

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