History Main / AlienSpaceBats

[[http://en.wikipedia.org/wiki/Alien_space_bats Now a verifiable wiki article]]!

* This trope is present or played with in most every episodes of ''Series/{{DoctorWho}}'' set in the past. Gods and aliens are either in danger of causing an alternate history or paradox, or they might end up causing history as we know it.

* This trope is present or played with in most every episodes of ‘’Series/{{DoctorWho}}’’ set in the past. Gods and aliens are either in danger of causing an alternate history or paradox, or they might end up causing history as we know it.

* The (nowadays less-known) likely progenitor of the "CSA victory" variation of AlternateHistory, ''Literature/BringTheJubilee'' by Ward Moore, [[PlayingWithATrope utilizes the trope with a twist.]] The basic premise is a classic example: history is changed by a time traveller affecting [[ForWantOfANail one small event]] (accidentally, in this case). The twist is that [[spoiler: in-universe, the historical reality ''was'' a Confederate victory (for wholly mundane and plausible reasons). The time-travel experiment and its consequences aren't shown until near the end of the novel, and the result is the emergence of an alternate timeline in which the USA won—i.e., ''our'' world is the AlternateUniverse from the novel's perspective.]]

* A few ''Series/{{Sliders}}'' episodes fell into this, with worlds where physical laws permitted magic and wizardry and dragons, whereas other worlds were ForWantOfANail. Still other worlds the Sliders visited combined these aspects. Interestingly, only one world had an event that fits the "alien" bit. According to the show, all those alien conspiracies on other worlds are actually true. The only difference on this world is that the government went public with FirstContact and established open trade with the Reticulans, resulting in many technological advances (including a virtual panacea, anti-gravity, and a manned mission to Mars). Disappointingly, the characters themselves don't actually get to meet any aliens. The best they get is a human who looks part-Reticulan thanks to a side effect of the panacea drug (his blood is also green).

Not to be confused with GoddamnedBats, or the Franchise/{{Batman}} from ''ComicBook/SupermanSpeedingBullets,'' who actually ''is'' an alien. Also not to be confused with the free-tailed bat that died clinging to the side of the external fuel tank of STS-119, nicknamed "Space Bat." Only vaguely related to the movie ''Film/Lifeforce1985'', which is not AH, but has ''literal'' alien bats.

Not to be confused with GoddamnedBats, or the Franchise/{{Batman}} from ''ComicBook/SupermanSpeedingBullets,'' who actually ''is'' an alien. Also not to be confused with the free-tailed bat that died clinging to the side of the external fuel tank of STS-119, nicknamed "Space Bat." Only vaguely related to the movie ''{{Film/Lifeforce}}'', which is not AH, but has ''literal'' alien bats.

* ''Without Warning'' and its sequel ''After America'', also by John Birmingham, offer one in a more recent past. Just before the 2003 invasion of Iraq, a mysterious energy bubble called the Wave engulfs most of North America, killing all within and denying entry. Other, non-primate animals are either unaffected or destroyed on a seemingly random basis. The trilogy examines the consequences of a modern world without America, as well as the struggles to survive and rebuild. One of the consequences is Israel nuking the Middle East and New York City being attacked by pirates (many of them being refugees from the Middle East).

* ''Without Warning'' and its sequel ''After America'', also by John Birmingham, set in 2003 and after, feature a wave of unknown energy that causes the population of most of North America to be suddenly disintegrated. Other, non-primate animals are either unaffected or destroyed on a seemingly random basis.

* John Birmingham's ''Literature/WithoutWarning'' offers one in a more recent past. Just before the 2003 invasion of Iraq a mysterious energy bubble called the Wave engulfs most of North America, killing all within and denying entry. The trilogy examines the consequences of a modern world without America, as well as the struggles to survive and rebuild. One of the consequences is Israel nuking the Middle East and New York City being attacked by pirates (many of them being refugees from the Middle East).

* ''VideoGame/VictoryBelles'' centers around the premise of an invading fleet of evil shipgirls known as the Morgana suddenly popping into existence right as Nazi Germany begins its invasion of Poland, with the only thing that can reliably counter them being the not-so-evil shipgirls (the eponymous Belles) that have also been suddenly popping up on humanity's own ships. While the world's navies have being able to somewhat coordinate their efforts against the Morgana via the League of Nations, their parent nations continue to war against each other (with Hitler and the Imperial Japanese Army in particularly still hellbent on their pre-Morgana plans of conquest).

[[http://en.wikipedia.org/wiki/Alien_space_bats Now a verifiable wiki article]]! That cites [[Website/TVTropes This Very Wiki]]![[note]]It cites GiantEnemyCrab, but still.[[/note]]