Experimenting with RPG colour groups

When conducting experiments with the RPG genre mostly used greens and browns with a lot of the scenes creating more mystery than terror. If this is used subtly however then this could really help make a big impact on environments. 

The blues and greens compliment the yellow and this is why they brightest colour seems duller not creating a fearful atmosphere.

Below we can see there is complimentary colours together that actually create an impact with the help of the dark purple in the background.

Below is using tones of de-saturated greens which does create some kind of tension but without the a bright contrasting colour it doesn`t appear dramatic