In The Blood
A Vampire Roleplaying Game
First Edition / Work In Progress
©2026 Ordo Octopia
Chapter 1: The Nature of the Blood
In The Blood is a role-playing game where you are a predator forever bound to the crimson essence that both sustains and torments you. The blood is not merely nourishment. It is power, it is memory, it is identity, and it is curse.
To drink is to absorb. To absorb is to become. For a time. Every drop carries echoes of the donor: their courage, their cowardice, their hungers, their gifts, their frailties. A vampire is never truly fixed. You are a kaleidoscope of stolen selves, shifting with every feeding.
Core Axioms
The Blood is both Power and Flaw.
You cannot claim strength without also claiming weakness.
Every gift you take carries its shadow.
Traits are Temporary (with rare exceptions).
Most powers and flaws fade when the Strength of Blood (SoB) runs dry.
You are defined by what remains when the borrowed blood is gone.
That unchanging core is your Fortitude and your baseline Sensitivity.
Chapter 2: Key Statistics
Fortitude
Your personal, permanent reservoir of vampiric strength.
Fortitude is what remains when you are starved, when all borrowed blood has burned away.
It is your innate vampiric potency, shaped by your mortal life and the sire who Embraced you.
• Determines your natural resistance to frenzy, sunlight, fire, and other banes.
• Sets your personal maximum capacity before blood begins to congeal and turn toxic.
• Influences how quickly you process and lose borrowed Strength of Blood.
Sensitivity (Sen)
Your attunement to the qualities within blood.
High Sensitivity means borrowed traits manifest strongly and vividly.
Low Sensitivity means borrowed traits are muted and easier to resist—but also weaker when you want them.
• High Sen vampires experience dramatic shifts in personality, urges, and abilities after feeding.
• Low Sen vampires change more subtly and retain more of their core self even when gorged.
Strength of Blood (SoB)
A temporary resource measured in nights (the time until the next sunrise).
SoB determines how long a borrowed trait remains active.
When SoB reaches zero, all absorbed powers and flaws fade, returning you to your baseline self (Fortitude + inherited sire traits).
Chapter 3: Feeding & Blood Capacity
Standard Human Blood (Benchmark)
Blood Capacity
A vampire can safely hold up to 3 pints of blood at once.
Overfeeding penalty: Holding blood longer than your Fortitude allows it to process safely causes sickness. The exact threshold is personal and tied to Fortitude + Sensitivity.
1) Blood Volume in an Average Adult Human
An average adult has
9–12 pints (4.3–5.7 liters) of blood, depending on size, sex, and weight:
- Men (avg. 70–80 kg / 154–176 lbs): ~10–12 pints.
- Women (avg. 55–65 kg / 121–143 lbs): ~9–10 pints.
- Often rounded to 10 pints (~5 liters / 1.3 gallons) for a typical healthy adult.
Vampiric Context: A vampire's "infection" via heart-entry requires near-total exsanguination—draining ~80–90% (8–10 pints)—to weaken the victim enough for fluids to reach the heart undiluted.
2) Blood Loss Before Death
Humans die from ~40–50% loss (4–6 pints from 10-pint baseline), classified as Class IV Hemorrhage (hypovolemic shock). Survival drops sharply beyond this without intervention.

- Rapid loss (e.g., arterial): Fatal at 30–40% (~3–4 pints).
- Slow loss: Up to 50% survivable briefly, but death inevitable without transfusion.
Vampiric Context: Vampires must drain ~4+ pints (to shock threshold) for infection viability—heart exposure via near-death collapse. Full drain (8–10 pints) ensures transformation before demise.
3) Recovery Rate of Lost Blood- Plasma/Volume: 24–48 hours (fluids restore via hydration; body retains water aggressively).
- Red Blood Cells (full function): 4–8 weeks (bone marrow ramps up via erythropoietin; iron-dependent).
- After 1-pint donation: Volume back in hours; hemoglobin normal in 6–12 weeks (wait 8–12 weeks between donations).
Factors: Nutrition (iron, B12), health, age speed/slow it. Severe loss delays full recovery months.
Vampiric Context: Post-feeding trauma? Victims "recover" volume fast but remain weakened (anemic) for weeks—prime for second bite/turning. Infection halts mortal regen, shifting to vampiric SoB.
Chapter 4: Powers & Flaws
Every donor imparts one Power and one accompanying Flaw.
You cannot accept the strength without also accepting the weakness.
Feeding Limits & Multi-Source Confusion
• A recently fed vampire typically expresses 3 Powers + 3 Flaws (from one dominant source or a harmonious blend).
• A hungry / lean vampire drops to 2 Powers + 2 Flaws.
• Starving → 0 borrowed Powers/Flaws (only Fortitude remains).
Drinking from multiple donors in short succession is possible—but dangerous.
• Each additional distinct source beyond the first adds +1 Power / +1 Flaw (up to your personal maximum).
• Mixing sources creates confusion → disorientation, conflicting urges, eventual psychosis if carried too far.
• High Sensitivity vampires suffer the worst identity fragmentation.
Classic descriptor format:
“He is uncannily perceptive but he is paranoid and jumpy.”
“She is frighteningly strong but she is brutish and slow-witted.”
Animal Blood
Animal blood follows the same rules but tends toward generic, archetypal traits unless the animal was exceptional (a champion racehorse, an alpha wolf, a legendary hunting cat…).
Human and especially vampire blood is far more individual and memorable.
Chapter 5: Rebirth
When a vampire creates a new vampire:
• There is a 50/50 chance the convert inherits the parents current dominant Power (the one most recently or strongly expressed) OR the grandparents Power (from the parents inherited Power).
This lottery of lineage helps explain why bloodlines can drift, mutate, and surprise even ancient lineages.
Chapter 6: Summary - Who Am I Tonight?
You wake each evening asking:
• How much blood do I still carry?
• Whose echoes are loudest in my veins right now?
• Which powers make me dangerous tonight and which flaws will betray me?
• How close am I to losing myself completely?
In In The Blood, identity is fluid, power is borrowed, and every swallow is a gamble with sanity.
The night is long. Choose carefully whose life you steal.
Chapter 7: Powers & Flaws Random Tables
When a vampire drinks blood, they absorb one Power and one accompanying Flaw from the donor. These traits reflect the donor’s essence, be they a virtuoso musician granting musical mastery or a paranoid recluse imparting suspicion.
To determine traits randomly (e.g., for generic donors or quick generation), roll a d100 on the tables below. Exceptional donors may have custom or multiple traits at the Storyteller’s discretion.
Usage Notes:
• Roll separately for Power and Flaw.
• Traits manifest based on the vampire’s Sensitivity: high Sen = vivid/intense effects; low Sen = subtle/resistible.
• Multi-source feeding risks psychosis from conflicting traits.
Powers Table (d100)
1. Empathic healer
2. Master swordsman
3. Arcane knowledge
4. Empathic intuition
5. Strategic mind
6. Silver tongue
7. Harmonic resonance
8. Storm caller
9. Telepathic insight
10. Silent stalker
11. Unbreakable focus
12. Unyielding resolve
13. Elegant duelist
14. Acute senses
15. Telekinetic nudge
16. Inspirational orator
17. Fearsome roar
18. Speed reading
19. Puzzle solver
20. Berserker fury
21. Kinetic intuition
22. Chameleon mimic
23. Tireless worker
24. Athletic prowess
25. Fortunate escapes
26. Prophetic dreams
27. Battle tactician
28. Master archer
29. Adrenaline junkie
30. Lightning reflexes
31. Sensory acuity
32. Loyal protector
33. Vampiric allure
34. Contortionist flexibility
35. Mathematical genius
36. Regenerative vitality
37. Fearless explorer
38. Rhetorical mastery
39. Illusionist trickster
40. Superhuman strength
41. Empowered by rage
42. Intuitive tracker
43. Hypnotic gaze
44. Aura of authority
45. Magnetic personality
46. Celestial sight
47. Eloquent speaker
48. Weapon improvisation
49. Commanding presence
50. Code breaker
51. Inventive genius
52. Encyclopedic knowledge
53. Artistic vision
54. Pain tolerance
55. Voice of command
56. Elemental affinity
57. Precognitive hunches
58. Aura of calm
59. Resilient endurance
60. Photographic memory
61. Detect lies
62. Persuasive liar
63. Explosive speed
64. Animal whisperer
65. Iron stomach
66. Radiant confidence
67. Dream walker
68. Unseen mover
69. Shapeshifting affinity
70. Lockpicking expert
71. Charismatic leader
72. Shadow blending
73. Master forger
74. Night owl endurance
75. Fleet-footed runner
76. Scholarly wisdom
77. Soulful performer
78. Beast tamer
79. Unparalleled musical talent
80. Poison resistance
81. Unshakable courage
82. Seductive charm
83. Voice mimicry
84. Lucky gambler
85. Eidetic recall
86. Creative improviser
87. Night vision
88. Stealth mastery
89. Crowd controller
90. Void walker
91. Polyglot linguist
92. Wall crawler
93. Iron will
94. Healing touch
95. Master negotiator
96. Primal instincts
97. Graceful acrobat
98. Pack hunter
99. Venomous bite
100. Camouflage expert
Flaws Table (d100)
1. Guilt-ridden conscience
2. Impulsive spender
3. Beast within
4. Grandiose fantasies
5. Paranoid delusions
6. Delirious confusion
7. Naive gullibility
8. Erratic moodiness
9. Insatiable hunger
10. Obsessive compulsion
11. Gullible trust
12. Brittle bones
13. Self-sabotaging
14. Manic depression
15. Hedonistic indulgence
16. Claustrophobic panic
17. Emotional volatility
18. Crowd aversion
19. Perfection paralysis
20. Delusional grandiosity
21. Hallucinatory visions
22. Blood frenzy
23. Anxiety spirals
24. Obsessive jealousy
25. Memory lapses
26. Violent temper
27. Pyromaniac urge
28. Doom prophet
29. Bipolar swings
30. Physical clumsiness
31. Berserker blackout
32. Narcissistic vanity
33. Greedy hoarder
34. Moral cowardice
35. Easily manipulated
36. Compulsive gambler
37. Gambling ruin
38. Indecisive waverer
39. Self-destruction
40. Stealing habit
41. Codependent attachment
42. Arrogant superiority
43. Blind berserker
44. Explosive outbursts
45. Petty vengefulness
46. Financial recklessness
47. Decadent corruption
48. Fire obsession
49. Superstitious dread
50. Ego inflation
51. Foolish superstitions
52. Sadistic cruelty
53. Lazy procrastination
54. Chronic insomnia
55. Masochistic self-harm
56. Crippling phobia of fire
57. Compulsive liar
58. Trust issues
59. Codependent leech
60. Jealous envy
61. Self-doubting weakness
62. Addicted to vice
63. Physical frailty
64. Manipulative deceit
65. Stubborn inflexibility
66. Vindictive spite
67. Fragile constitution
68. Phobic aversions
69. Agoraphobic isolation
70. Uncontrollable rage
71. Vengeful grudge-holder
72. Socially awkward
73. Reckless impulsivity
74. Allergic sensitivity
75. Cowardly flightiness
76. Forgetful absentmind
77. Hypochondriac fears
78. Smothering love
79. Panic attacks
80. Mad visions
81. Hypersensitive nerves
82. Hopeless despair
83. Cruel whims
84. Paralyzing doubt
85. Spiteful revenge
86. Schizoid detachment
87. Pain-seeking
88. Gluttony for blood
89. Night terrors
90. Slothful inertia
91. Kleptomaniac thief
92. Rage blackouts
93. Pessimistic gloom
94. Gluttonous excess
95. Inflexible dogma
96. Depressive lethargy
97. Terror-haunted
98. Social phobia
99. Allergy to silver
100. Rigid perfectionism
Here are some Vampire Supernatural Abilities — a dedicated category of powers that feel uniquely vampiric, drawing directly from classic folklore, Bram Stoker's Dracula, and broader mythological traditions. These are distinct from the generic "Powers & Flaws" system (which pulls from donor traits like strength, musical talent, or paranoia).
These abilities represent the core, inherent curse/blessing of undeath itself — things only true vampires possess, often tied to blood, night, the grave, predation, or the inversion of life. They scale with age, blood potency, or Strength of Blood in your system (e.g., stronger when recently fed/gorged, weaker when lean/starving).
- Mist Form
- No Reflection / No Shadow
- Hypnotic Gaze / Mesmerism
- Animal Command
- Grave Soil Affinity
- Blood Bond / Vinculum
- Wall/Vertical Crawling
- Weather Influence
- Infectious Bite / Turning
- Undead Resilience
- Predatory Aura
- Echoes of the Grave
- Blood Memory
- Night's Veil
- Astral Projection / Soul Wandering
- Poltergeist Manifestation
- Plague/Disease Emission
- Seed/Grain Compulsion
- Unhallowed Ground Affinity
- Size Reduction / Compression
- Infectious Corruption
- Familiar Binding
- Dream Invasion
- Blood Puppetry
- Shadow Puppetry
- Vitality Siphon (Non-Bite)
- Curse of Invitation
- Entropic Touch
Vampire Supernatural Abilities (Inherent Vampiric Powers)
- Mist Form — Dissolve into fog or vapor to pass through cracks, keyholes, or under doors; immune to physical attacks while in this state (except wind or strong breezes). (Classic from Dracula and Eastern European lore.)
- No Reflection / No Shadow — Casts no reflection in mirrors, silver, water, or glass; leaves no shadow in light. Makes modern surveillance tricky; high-Sensitivity vampires feel existential dread from this.
- Hypnotic Gaze / Mesmerism — Lock eyes to enthrall mortals, planting suggestions, erasing memories, or commanding simple actions. Stronger against the weak-willed; fails on strong minds or other supernaturals. (Stoker's Dracula excels at this.)
- Animal Command — Summon/control nocturnal beasts (bats, wolves, rats, owls, moths) as spies, messengers, or attackers. Can see/hear through their senses briefly. (Dracula's wolf pack and bat swarms.)
- Grave Soil Affinity — Must rest on or near native soil from birthplace/grave to regain full power; carrying it allows travel without weakening. Without it, powers fade over nights. (Dracula's boxes of Transylvanian earth.)
- Blood Bond / Vinculum — Drinking repeatedly from the same mortal creates a psychic/emotional link; they feel compelled loyalty, share faint sensations, or can be summoned. Risk of obsession or betrayal if bond breaks.
- Wall/Vertical Crawling — Scale sheer surfaces like a spider/lizard, defying gravity. Useful for silent entry or escape. (Direct from Dracula's castle scenes.)
- Weather Influence — Summon storms, fog, or unnatural darkness to shroud movements or terrify prey. Older vampires create true tempests. (Dracula's storm-arrival in England.)
- Infectious Bite / Turning — A fatal or near-fatal bite can Embrace a victim into vampirism (with the 50/50 lineage roll you have). The process is agonizing; not all survive.
- Undead Resilience — Ignore most mortal wounds, poisons, or diseases; only specific banes (stake, decapitation, fire, sunlight in some variants) truly threaten. Heal rapidly by feeding.
- Predatory Aura — Exude an instinctive fear or allure; mortals feel primal dread or hypnotic attraction. High Sen vampires amplify this to panic crowds or seduce effortlessly.
- Echoes of the Grave — Sense nearby death, fresh graves, or dying people; draw faint vitality from corpses or battlefields without feeding.
- Blood Memory — Taste a drop of blood to glimpse fragmented memories, emotions, or secrets of the donor (stronger with fresh/vital blood). Risk of overwhelming visions or donor's flaws bleeding into personality.
- Night's Veil — Become invisible/undetectable in deep shadows or darkness; movement blurs into night. Fades in bright light or when actively attacking.
- Summon the Dead — Call lesser undead (skeletons, zombies, or ghosts tied to victims) as servants. Rare and costly in blood/willpower.
- Inhuman Voice — Speak in whispers that carry across distances or project terrifying howls/cries that shatter mortal courage.
- Dominate the Mind — Force mortals to forget encounters, obey complex commands, or believe false memories (stronger than basic mesmerism).
- Bat / Wolf Transformation — Shift into a bat for flight/scouting or wolf for hunting/strength. Partial shifts possible (claws, fangs, senses).
- Plague Bearer — Spread disease or corruption through bite/scratch; victims sicken and die slowly, attracting more prey or weakening communities.
- Eternal Hunger Awareness — Sense blood/heartbeats within a radius; pinpoint the living in crowds or through walls. Constant low-level torment when starving.
- Astral Projection / Soul Wandering — Project the soul as a shadowy phantom or invisible presence at night to spy, terrify, or drain vitality from afar (strigoi living/dead dual nature). Risk: body vulnerable if discovered.
- Poltergeist Manifestation — Cause objects to move violently, doors to slam, or eerie knocks/sounds near graves or victims (Eastern European reports of strigoi activity).
- Plague/Disease Emission — Exude corrupting aura or breath that spreads illness, blight on crops, or wasting sickness (folklore vampires as plague-bringers).
- Seed/Grain Compulsion — If scattered seeds, grains, millet, or small objects are thrown, the vampire feels irresistible urge to count them, buying time for escape (arithmomania weakness turned offensive distraction).
- Unhallowed Ground Affinity — Walk freely on cursed, suicide, or unconsecrated ground; gain minor power boost there (Dracula's access to victim graves).
- Size Reduction / Compression — Shrink to child-size or smaller to slip through tiny spaces while retaining form (Stoker's "so small" description).
- Infectious Corruption — Bite/scratch transfers slow decay or vampiric taint without full turning; victim becomes pallid, feverish, and drawn to night (plague-spreading variants).
- Familiar Binding — Bind a living animal (e.g., cat, raven) as permanent servant/spy; share senses permanently, but animal ages rapidly or suffers.
- Dream Invasion — Enter sleeping minds to feed on fear/dream-essence or implant nightmares/visions (lamia-like night-haunting).
- Blood Puppetry — Temporarily control a recent victim via blood link, making them move/speak as marionette (weaker than full domination).
- Storm Summoning (Advanced) — Call localized tempests, thunder, or fog banks beyond basic weather influence (Dracula's ship arrival storm).
- Shadow Puppetry — Manipulate natural shadows to form tendrils, illusions, or grasping hands for attack/grab (tied to no-shadow curse inversion).
- Vitality Siphon (Non-Bite) — Drain life-force through touch or proximity without breaking skin; leaves victim aged/weakened (essence-draining folklore).
- Grave Whisper — Commune with buried dead for secrets or to animate minor undead briefly as distractions (echoes of strigoi soul-meetings).
- Invisibility in Mist — Become unseen while merged with natural fog/mist; movement silent and ethereal (extension of vapor form).
- Lunar Empowerment — Powers peak under full moon; minor regeneration boost or frenzy resistance (tied to nocturnal nature).
- Curse of Invitation — Cannot enter dwellings without verbal invitation; breaking this rule causes pain or power loss (classic folklore rule).
- Mirror Aversion Projection — Force others to see distorted/horrific reflections of the vampire in mirrors (inversion of no-reflection).
- Entropic Touch — Cause rapid decay in organic matter (plants wither, food rots, wounds fester) on prolonged contact (corruption theme).
- Ancestral Recall — Access faint racial memories of ancient vampires through blood meditation; grants forgotten lore but risks identity bleed/psychosis.
1-20 emphasise the mythic, cursed side of vampirism: inversion of life (no reflection, grave soil need), predatory dominion (animals, mesmerism), and the grotesque/uncanny (mist, plague, echoes of death). They fit your game's theme of blood as power/flaw — many grow stronger with age/feeding but risk psychosis or loss of self if overused or mixed with absorbed traits.
21-40 These lean into the grotesque, folk-horror side: compulsion quirks (counting), plague vectors, soul detachment, and environmental dominion. They avoid modern additions (e.g., no explicit telekinesis beyond poltergeist, no daywalking hints).
Many pair naturally with flaws: e.g., Astral Projection leaves the body defenceless (flaw: vulnerability during use); Plague Emission risks self-infection if overdone.
Eldritch Vampiric Gifts
These are rare, forbidden manifestations of vampirism that transcend the traditional blood-curse, blending the predatory undeath with cosmic horror — whispers from beyond the stars, voids between realities, and entities older than gods. They are not "learned" or absorbed from donors; they awaken in ancient or particularly accursed vampires, often after prolonged starvation, exposure to forbidden lore, or contact with abyssal forces (the Abyss, Outer Dark, or nameless things that slither in the spaces between thoughts).
These Gifts carry immense power but invite inevitable madness, reality erosion, or attraction of cosmic predators. They fit your game's theme: immense Strength of Blood amplifies them vividly (high Sen = overwhelming, hallucinatory effects), while low blood or starvation causes backlash (flaws like uncontrollable visions, self-harm urges, or summoning unwanted entities).
Here are 13 core Eldritch Vampiric Gifts
- Void Gaze — Eyes become bottomless black pools; staring forces victims to glimpse the infinite nothing, inducing catatonia, amnesia of self, or spontaneous combustion from existential terror.
- Starless Hunger — Feeding no longer satisfies with mortal blood alone; must consume "light" (starlight, fire, souls, or electric currents) or starve eternally. Victims age centuries in moments.
- Non-Euclidean Form — Body warps geometry: limbs elongate impossibly, angles bend wrong, doorways lead through the vampire instead of rooms. Movement ignores distance in short bursts.
- Whisper from Beyond — Speaks in tongues that rewrite memory; words implant false histories or drive listeners to worship nameless outer gods. Echoes persist in minds forever.
- Abyssal Reflection — Mirrors show not the vampire but writhing tentacles, star-spawned horrors, or the viewer's own inevitable death. Breaking the mirror releases a fragment into reality.
- Temporal Bleed — Ages or rejuvenates objects/people touched; rusts metal instantly or restores youth briefly (at cost of the vampire's own memories fading).
- Dream-Eater's Veil — Enters collective unconscious as a shadow-entity; devours dreams to gain forbidden knowledge but risks merging with dream-things or losing identity.
- Entropy Cascade — Touch accelerates decay on cosmic scale: flesh melts to slime, stars dim in witness's perception, time frays locally (seconds stretch to hours).
- Summon the Unnamed — Calls lesser eldritch spawn (star vampires, color out of space fragments) bound to blood. They obey but corrupt the summoner over time.
- Infinite Thirst Echo — Blood drunk creates recursive hunger in victim; they crave endlessly, spreading vampirism as a memetic plague rather than bite.
- Cosmic Migration — Dissolves into starlight/mist to travel interstellar distances instantly; returns changed, with alien geometries etched into flesh.
- Madness Symbiosis — Feeds on insanity itself; proximity amplifies derangement in others while granting the vampire glimpses of ultimate truths (at Sanity cost).
- Reality Fracture — Drains life across light-years, aging distant stars or pulling cosmic horrors closer. (Awakens after gazing into abyssal voids too long; high risk of unintended summonings that consume the vampire.)
These Gifts emphasise the unknowable terror of cosmic horror fused with vampirism: the fear isn't just predation, but realising existence itself is fragile, meaningless, and infested with things that regard mortals (and vampires) as insignificant motes.
TO BE CONTINUED ... MORE TO FOLLOW
THIS IS A WORK IN PROGRESS
Future Developments to include;
RENAISSANCE WORLD SETTING : 1515 AD
includes chapters on;
CASTLE & VILLAGE
POLITICAL NOBILITY
FAITH & FURY
DEALING WITH THE DEVIL
WITCHES, WEREWOLVES & WOODSMEN
DEMONS, IMPS & FAE
THE NEW WORLD
CAMPAIGN OF CENTURIES
and
ILLUSTRATIONS
Y • I I • K WORLD SETTING : 21st Century