Colours in game can be useful to set the tones of the game, the game inside could be an example. Inside consist of grey/blue hues that is monochromatic hues, there is different shades, tints in one colour.

The left image sets the atmosphere of the game and communicates the emotion, in this image we might assume he looks sad. However, looking at the player's surrounding makes the viewer analyse the setting more and might give a different kind of feeling. The light shining on the player helps to signpost paths or items important to the player. Also, the red shirt the player is wearing gives the player an understanding that's the main character and draws the attention.