[1] the characters' "world" is ending, but survival is an afterthought #285257 | kajibariki BroCon Ane Natsuki Hen | 95,533 [2] the characters' "world" has ended; survival and reproduction is the priority #501315 | Mama to Musuko ga Mujintou de Love Love… | 20,410 [3] absolute destruction, buildings are torn down and only 10 people are alive (the cliche post-apocalyptic setting) I think all of these examples should fit under "apocalypse" but they not all of them do with ur current definition. upvoting for the tag, hoping for a new description though