Narrative

An effect which depicts a visual phenomena related with the situation. For example, fog on a street leading user's attention to a narrative event. Weather, fog, thunder, tornadoes; biological processes, decomposition, germination; physical processes, wave propagation, erosion; tidal flow, moonbow, blood moon and natural disasters such as electromagnetic pulses, volcanic eruptions and earthquakes.
This example shows a Full Moon explaining why there's visibility in this dark scene.

A visual effect that influences the emotions related to the scene, for example an "old film look" (B/W, grain, etc) to denote historical reference.

The lighting is designed to induce a specific mood that strengthens the narrative, for example darkness used to convey a sense of gloom in an abandoned building.

The objects in the scene that the user may or may not interact with; the objects add to the mood of the story

The whirring of a bullet or footsteps in the scene

The cracking of a fire

The acoustic landscape of a caffee

A effect experienced in controllers to a response in the story; for example, there is an earthquake and controllers vibrate.