[Loved Trope] Something's wrong with the sky





Extinction Belt - In Scarlet Nexus, a cosmic phenomenon known as the Extinction Belt spawns monstrosities known as Others on the Earth and can be seen from the surface in the form of an effect similar to a gasoline spill.
Primogenesis - In Final Fantasy XVI, after the Mothercrystal Drake's Tail is destroyed, Ultima casts the spell Primogenesis, permanently covering Valisthea in purple clouds. In addition to blocking out the sun, most forms of magic fail, such as those from Crystal shards and Bearers, and the Obelisks which previously delivered aether to the now-destroyed Mothercrystals now spew it outward, triggering an increase in Aetherfloods.
Everlasting Light - In Final Fantasy XIV, due to an excess of light-aspected aether, the parallel world of the First was struck by a Flood of Light, which destroyed most of the world's landmasses, sent angelic monsters called Sin Eaters out to hunt down the remaining populace, and bathed the world in perpetual light for a hundred years.
Starscourge - In Final Fantasy XV, an illness called the Starscourge has been releasing light absorbing miasma particles into the atmosphere as long as anyone can remember, gradually shortening the length of the day, though it's too gradual for most people to really notice. After events in the story cause this phenomenon to accelerate, the sun is eventually permanently blocked out, leading to ten years of darkness dubbed the Long night.
Planets in the Sky - In the two part Doctor Who episode The Stolen Earth/Journey's End, the Daleks transport the Earth and twenty-six other planets to the Medusa Cascade as part of a planet to destroy all matter in the universe.