Call of Cthulhu

Running a horror campaign is very hard work. Imagine a scene where the players should be in horror, frightened, excited and then someone tells a silly joke, a mobile phone rings or your mother calls from the upper floor and asks if someone want some sandwiches. And in an instant all you’ve worked for as a GM is ruined. But there are some simple but efficient tricks to make your work as a GM easier.

1. Turn down the lights
   I usually darken the room when we play “Call of Cthulhu” or similar games. Then I get some candles and use only them for illumination. If someone complains that he can’t read his character sheet just use more candles. Bright artificial light usually distracts from the creepy atmosphere you want to create. If you run a SF-horror campaign you can utilize a flickering neon lamp for quite a nice effect. But this should be used sparingly because it gets old fast.
2. Creepy music
   Another easy trick is to use creepy music in the background. And by creepy I don’t mean the latest Britney Spears album! Soundtracks from movies like “A Nightmare on Elm Street” or “John Carpenter’s Prince of Darkness” work great. Refrain from using music with vocal and keep the volume down. If used correctly illumination and music set the mood even before the game started.
3. Props!
   I love using props. When playing games like “Call of Cthulhu” handing out newspaper excerpts and other handouts to the player makes the game feel more real. And this almost everytime improves the sense of horror. A friend of mine has a sheep’s skull that he sometimes brings along when he runs a game and places it in front of his GM screen. This adds a nice touch.
4. Turn off the mobile phones
   That should be a requirement for every gaming session! Just ask your players to turn off their phones. It makes things so much easier!
5. No eating at the gaming table
   Nothing destroys the mood faster than someone munching chips at the gaming table while the GM tries to describe the supernatural horror in all its details. Instead of having food at the table all the time, make pauses to have something to eat. During the meals turn of the lights again and let your players relax.
6. Voice and sounds
   One way to get your players attention especially when it’s supposed to be creepy is to talk with low volume. Usually they will listen more closely (especially if you robbed them of most of their sight by turning the lights down). When something dramatic happens become louder. Some GM even shout, stand up for more effect or even use maniacal laughter (if it’s appropriate).
   In one adventure scratching sounds played an important part, so I scratched with my fingernails over the underside of the gaming table for some great effect.
7. Don’t overdo it
   The most important advice is: don’t overdo it. If you constantly scratch under the table, flicker the lights, do creaky-door sounds all the time, it gets old fast. After a while your players will not be in fear but they will probably throw their dice at you just to make it stop. So use props, voice and sounds sparingly.

I hope these simple tricks will help you improve the mood in your horror adventures! And if you know of more tricks, please let all of us know in the comments!