100 Mysteries and secrets from Red Dead Redemption, RDR Undead Nightmare and Read Dead Redemption 2

 The Red Dead Redemption series is filled with mysteries, secrets, and unexplained events that contribute to its rich world-building and atmosphere. Below is a list of 100 mysteries from the Red Dead Redemption games, including the original RDR, Undead Nightmare, and RDR2.

1. The Strange Man – Appears throughout the game, guiding John Marston, but his true identity remains a mystery.
2. The Ghost Train – A spectral train that can be found on the tracks at night in the Tall Trees region.
3. The U.S. Army's Hidden Secret – The military appears to be conducting experiments involving human rights violations, particularly around Fort Mercer.
4. The Mystery of the Treasure Map – A treasure map that leads to a hidden chest in the game, but many players wonder if it’s really worth the pursuit.
5. The Werewolf in the Forest – Some players report sightings of a strange, human-like wolf in the woods.
6. The Vanishing Horse – Some players have encountered horses that disappear into thin air after getting close.
7. The Strange Noise in the Ghost Town – Mysterious sounds heard in Tumbleweed, a ghost town, hint at some hidden event or force.
8. The Strange Map in the Ruins – There’s a map that seemingly leads to nowhere in the ruins near Diez Coronas.
9. The Haunting of the Abandoned Mines – Players report strange occurrences like sounds and shadows in the Cotorra Springs mines.
10. The Disappearing Campfire – In Cholla Springs, sometimes campfires appear without any explanation.
11. The Dark, Shadowy Figure in the Desert – A ghostly figure that disappears when you approach it in the Cholla Springs desert.
12. A Hidden Cabin with Mysterious Occupants – An abandoned cabin with eerie signs of life found in Hennigan’s Stead.
13. The Shadow of the Devil – A strange figure that can sometimes be seen riding on the horizon near Tall Trees.
14. The Ghost of the Wastelands – Rumors of a ghost that can appear while crossing the desert.
15. The Undead Horse – Some players have witnessed ghostly, skeletal horses that roam the wild.
16. The Dead Man’s Cave – A mysterious cave where the remains of a man, seemingly killed by unnatural forces, are found.
17. The Whispering Voice – Some players have reported hearing strange whispers at night in the Great Plains.
18. The Bizarre Meteorite – A strange object in Tall Trees that some players speculate is from another world.
19. The Exploding Town – Tumbleweed mysteriously explodes in some versions of the game with no clear cause.
20. The Unmarked Grave – An unmarked grave near MacFarlane’s Ranch that has never been explained.
21. The Fallen Hero – A legendary outlaw who was believed to be dead, but strange sightings suggest otherwise.
22. The Cause of the Zombie Plague – While the Undead Nightmare is full of zombie-like creatures, the true cause of the outbreak is never explained.
23. The Plague's Link to the Supernatural – Many players believe the Undead were raised by a supernatural force, though the game doesn’t give a definitive answer.
24. The Four Horsemen of the Apocalypse – The Four Horsemen appear throughout the expansion, but their true origins remain elusive.
25. The Cursed Ranch – A ranch plagued by strange occurrences and Undead enemies.
26. The Old West Cultists – A mysterious group of people worshiping an ancient, dark power.
27. The Possessed Man – A man who turns into an Undead and explains cryptic warnings about the plague’s spread.
28. The Mysterious Meteorites – Alien-like rocks scattered across the world, hinting at an extraterrestrial presence.
29. The Walking Dead's Curse – The Undead Nightmare story closely mirrors a curse, but its origin is not fully explained.
30. The Vanishing Villagers – Several towns seem to disappear or have all their inhabitants mysteriously turned into Undead.
31. The Shadow Figures in the Night – Strange figures can sometimes be seen lurking around Blackwater during the night.
32. The Headless Rider – A man riding a horse without a head, appearing as an eerie figure, hints at some paranormal force at work.
33. The Undead King – A larger-than-life figure believed to be the first of the undead, whose whereabouts are unknown.
34. The Cursed Well – A well in Cholla Springs that seems to lead to a never-ending abyss of darkness.
35. The Zombie Bear – An incredibly strong, undead version of a bear that roams the wild.
36. The Plague Doctor – A mysterious figure who appears to be studying the undead, with an unknown agenda.
37. The Undead Sheriff – A sheriff who continues to protect a town, even after his death, keeping the Undead at bay.
38. The Prophecy of the Last Day – A prophecy hidden in one of the secret locations that hints at the end of the world.
39. The Mad Scientist's Lab – A scientist who seeks to cure the Undead, yet his experiments seem to have dark consequences.
40. The Undead Town – A mysterious town filled entirely with Undead that seems to have once been a thriving settlement.
41. The Ghostly Town of Armadillo – Armadillo becomes completely deserted, but certain noises suggest something strange happened here.
42. The Return of the Plague – Players wonder if the Undead Nightmare plague could return, with hints of its origins never fully explained.
43. The Mysterious Artifact – An item that may be the source of the Undead’s rise, hidden deep within the game world.
44. The Ghost of the Old West – A ghostly apparition of a figure, possibly tied to Dutch’s gang’s past, can be seen in certain areas.
45. The Strange Man Returns – A mysterious figure who appears to be the same Strange Man from the original RDR.
46. The Abandoned Wagon in the Mountains – A wrecked wagon with no driver and strange items inside, suggesting a violent past.
47. The Vanishing Stranger – A stranger who appears and offers cryptic messages, only to disappear when approached.
48. The Devil’s Cave – A cave in the Roanoke Ridge with eerie symbols and mysterious sounds.
49. The Unsolved Mystery of the Vanishing Cowboy – A cowboy who seems to have vanished into thin air, his fate a mystery.
50. The Mysterious Creature in the Swamp – Rumors of a swamp monster that haunts the swamps of Bayou Nwa.
51. The Sasquatch Legend – A hidden quest involving a legendary Sasquatch in the wilderness.
52. The Ghost of the Lake – A ghostly figure that appears near Lake Isabella.
53. The Dead Man's Letter – A mysterious letter found by a campfire, containing cryptic warnings about a dangerous figure.
54. The Mysterious Chest – A chest buried deep in the woods that holds an ancient artefact.
55. The Dark Rider – A rider on horseback, whose presence signals a bad omen, found near Cotorra Springs.
56. The Haunted Shack – An old shack where the furniture is inexplicably overturned and strange occurrences happen.
57. The Hidden Treasure of Limpany – Rumors of a hidden treasure tied to the Limpany house, filled with strange clues.
58. The Witch of the Bayou – A legendary figure who is said to grant wishes, but at a great cost.
59. The Vanishing Train – A train that suddenly disappears from the tracks at Horseshoe Overlook.
60. The Undead in the Forest – Strange figures that appear to be undead but fade away when approached.
61. The Missing Persons Cases – Many people have disappeared, with no trace left behind.
62. The Giant Rat in the Mine – A huge rat discovered in an abandoned mine.
63. The Whispering Canyon – A canyon where voices are heard, but no one is around.
64. The Cursed Mirror – A mirror found in an abandoned house that distorts reflections.
65. The Witch’s Mark – A symbol found in the trees, leading some to believe that witches once inhabited the area.
66. The Haunted Mansion – An old mansion where strange lights flicker at night and sounds are heard from within.
67. The Lost Settlement – A ghost town that shows up only when the sun sets, leaving behind eerie traces of life.
68. The Mystery of the Waterlogged Documents – Papers found near Bayou Nwa that seem to predict future events.
69. The Cursed Weapon – A weapon with strange powers that seem to curse those who wield it.
70. The Phantom Horse – A horse that vanishes when you try to approach it in Tall Trees.
71. The Wild Hunt – A rumor of a group of spectral riders who hunt through the forests at night.
72. The Vanishing Bear – A massive bear that appears near Grizzlies East, only to vanish when approached.
73. The Watcher in the Woods – Strange figures seen watching from the trees, only to disappear when approached.
74. The Black Rider – A rider seen in the Scarlet Meadows at night, with no one else around.
75. The Unmarked Graves – Found across the map, these graves hint at tragic backstories.
76. The Mysterious Cabin – A secluded cabin that appears to be abandoned, but signs of life are still present.
77. The Phantom Train – A ghostly train appears at Cotorra Springs, but only during specific conditions.
78. The Missing Woman – A woman vanishes in Valentine, with mysterious clues pointing to her disappearance.
79. The Strange Rock Formation – An unusual rock formation near Hanging Rock that some believe marks a hidden treasure.
80. The Man in the Mask – A man seen in the woods wearing a strange mask, with an unspoken history tied to the O'Driscolls.
81. The Old Lady’s House – A house haunted by the ghost of an old lady who warns about an impending disaster.
82. The Hidden Mine – An abandoned mine with treasures hidden inside but guarded by strange traps.
83. The Eyeless Statue – A statue with its eyes scratched out, found in the forest, which some say follows you.
84. The Mysterious Message – Cryptic messages left around Saint Denis hinting at a major conspiracy.
85. The Broken Oath – A story of betrayal and vengeance involving Dutch’s gang, hidden in forgotten letters.
86. The Shadow in the Sky – A strange shadow that appears at night, causing an ominous feeling.
87. The Whispering Grave – A grave in the Heartlands where whispers can be heard in the wind.
88. The Lost Souls of the Swamps – Stories of the ghosts of Bayou Nwa who wander the swamps.
89. The Hunting Ghost – A spirit who is said to stalk Grizzlies West, and only appears to those worthy of its hunt.
90. The Unfinished Church – An abandoned church in Lemoyne, with strange markings suggesting it was abandoned for unnatural reasons.
91. The Red Mist – A red mist that appears at dusk in Amber Hills and distorts time.
92. The Creature in the Marsh – A swamp-dwelling beast that is never seen, only heard.
93. The Witch's Curse – A curse that some believe follows those who speak of Bayou Nwa's history.
94. The Ghost Horse of the Plains – A ghostly, spectral horse that appears in the Heartlands at night.
95. The Mysterious Floating Light – A floating light seen in the wilderness, leading some to believe in paranormal forces.
96. The Sinking Boat – A boat found in the water near Bluewater Marsh that seems to be sinking deeper into the lake.
97. The Moonlit Killer – A figure said to appear on full moon nights, responsible for many unexplainable deaths.
98. The Disappearing Merchant – A traveling merchant who vanishes once his business is completed, leaving behind cryptic goods.
99. The Ghost of the Elder – A ghostly figure of an elder man found near the Big Valley who warns players of approaching danger.
100. The Final Message – A letter believed to be written by a former gang member that contains clues about the future fate of Arthur Morgan.

These are some of the most intriguing mysteries, legends, and conspiracies found across the three Red Dead Redemption games, which have sparked many theories and interpretations among fans.