alien invasion: futuristic city under siege

adding alien apocalyptic artificial atmosphere bodies bright captivating casting city cityscape cloud clouds conflict conveys dark darkness dawn doom dusk effect emitting evening filled futuristic glowing high-stakes highlighting highways horizon hovering illuminated impending invasion landmark landscape large light lights making metropolis mix modern mood morning multiple natural night ominous orange portrayal red reflection scene sci-fi sense siege sky skyline skyscraper skyscrapers spacecraft stormy sunlight sunrise sunset water