What does it mean when a shadow passes over the stage?

What does it mean when a shadow passes over the stage? - Three Female Dancers Dancing

In some runs, the first area (and maybe others), have a shadow move over the map making everything darker in general and also outlined in red. Is this just aesthetic or does it have some affect on the stage/entire run?






Pictures about "What does it mean when a shadow passes over the stage?"

What does it mean when a shadow passes over the stage? - Silhouette of a Person Holding a Hand Fan on Stage
What does it mean when a shadow passes over the stage? - Woman in Red Spaghetti Strap Tank Top
What does it mean when a shadow passes over the stage? - Woman Playing Electronic Keyboard While Singing





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