1

POV/Narrator was unreliable; it omitted some scenes. In the last scene, confess that omission

2

Everything was a dream all along

3

POV/Narrator died in the middle of the story: the rest of the story was a near-dead hallucination

4

Main character was a infiltrated mole from the enemies

5

All characters die in a frustrating way at the end. The antagonist wins

6

Main characters are the evil side all along

7

Bolivian army cliffhanger: A show's season ends on a cliffhanger where it's hard to tell who survived and who didn't.

8

Narrator simply stop narrating since the ending is so hard to describe

9

Stinger twist revealts that the victory of the protagonist wasn't total

10

Antagonist wins, but it was a pyrrhic victory

11

Nested Story Reveal: Supposedly real events turn out to be a fictional story within a larger story.

12

Gainax Ending: The story's ending is confusing and makes no sense.

13

Graceful Loser: A person who loses, but is content with not winning.

14

Everybody Did It: The mystery ends with every suspect guilty.

15

The Killer in Me: One of the protagonists has been the villain the whole time — which can be as much of a shock to them as to everyone else.

16

Last Breath Bullet: Villain thought killed turns out to have enough life left in them to do one bad deed before dying for real.

17

Nested Story Reveal: Supposedly real events turn out to be a fictional story within a larger story.

18

Or Was It a Dream?: It looks like the character only dreamed the events of the story, but then it's hinted that what they supposedly dreamed about had actually happened.

19

PoV was a twin sibling of the real protagonist

20

Supernatural events happens after a mental breakdown of the narrator

21

Character discover he is fictional

22

A single unmentioned character is responsible of many misteries

23

There are not central solution to the questions. Just unrelated coincidences

24

Casual events reveals to be scripted.

25

PoV is being surrounded by conspirators and liers

26

A larger scale event that mirror the local event is revealed

27

Third person omnicient narrator is revealed as the antagonist

28

First person narrator is revealed as the antagonist

29

First person narrador dies, yet it continues narrating events

30

Fist person narrator is revealed to be from another species/gender/nature that it is assumed

31

First person narrator is revealed to be a imaginary being

32

Part of the narrative is revealed to be a dream

33

Part of the narrative is revealed to be a elaborated lie

34

Part of the narrative could be alucinations, dreams or lies, but it is inconclusive

35

Protagonist became the monster he was fighiting all along

36

Protagonist virtuous path is reveled to be a selfish plan all along.

37

Protagonist is surrounded by deadly enemies, The story ends in a cliffhanger

38

Secret antagonist revealed to be a small-time antagonist that was defeated early in the story

39

The autor appears in the story. And dies

40

The macguffin the protagonist was seeking never existed at all

41

The protagonist is not the Chosen One, but a close ally

42

The final act is never resolved. An epilogue explain some things but it is mostly inconclusive

43

Secret antagonist was not even a person, but an object

44

Secret antagonist doesn't exist; it is a composition of unrelated events

45

A precursor of the protagonist is revealed as the secret antagonist

46

A massive, unrelated and unpredicted world-spaning event derails the narrative and left the end unresolved

47

The antagonist is really a puppet of the allies of the protagonist

48

All the narrated events are carefully orchestrated as a test of value

49

Epilogue reveals that a close ally of the protagonist is really a mole

50

Events happens to cuestion the sanity of the protagonist