I am not trying to call out @Jlaw or anyone who has added different examples, but I would like to discuss the trope. The trope is how the setting is changed into something more fantastic on Earth. It can turn into an Urban Fantasy or apocalyptic fantasy. Still, humanity's survival is possible through means that usually come from the source of an apocalypse. My questions come with how different examples from my perspective do seem to fit it well unless I am missing something:
- Spoilers for Hellstar Remina is about the titular planet coming to Earth and consuming it. It doesn't show much in the way of fantasy, along with the Earth being destroyed in the end.
- Batman: No Man's Land is about how Gotham has been devastated by a massive earthquake. However, there aren't many fantasy elements from what I know about the comic.
Black As Night is a Zombie Apocalypse caused by the Black Lantern rings where various characters become the undead with their Lantern rings and, if possible, their superpowers. There aren't benefits for people surviving the crisis, and it comes from how arduous the zombies are in this case.
- Nine is set in a world where machines have exterminated humanity. With humanity dead, it doesn't fit the trope. The only element I can see being fantasy is the amulet Plot Device.
- Raya and the Last Dragon takes place in Kamandra, a different setting from Earth. There are also no benefits to their survival from the Dragon Gem shattering.
- I am a bit unfamiliar with Hinduism, but Kalki wiping out people who follow adharma instead of the dharma doesn't show much of an apocalyptic situation. There are also no benefits from it unless there is an interpretation that I am missing.
- The Last Guardian doesn't seem to fit because it is about how villages are raided by beasts rather than being put into an apocalyptic situation.
- Gravity Fall's Weirdmageddon is apocalyptic, but there isn't anything from it that helps the town's citizens survive.
- Amphibia being changed is more of a dystopia due to the industrialization to prepare an army to invade Earth. Also, I can not see helping the Amphibians. Added note, they are not on Earth.
- Gargoyles' Future Tense shows a dystopic New York that has shown a disastrous situation for the people and the gargoyles. There is also ambiguity due to how the whole thing was a ruse caused by Punk to get the Phoenix Gate from Goliath. Plus, Puck left the question of whether it was just an illusion he conjured or a vision of a possible future.
I wish to discuss this further and if there is possible flexibility with the trope. If there is nothing to discuss within a week of me posting it here. I will delete these examples to make the trope more concise with the current description.