GENERATING ROOMS
For each room the PCs enter, roll a Room Type. Then, roll on the
corresponding table to determine the room contents.
ROOM TYPE
d12
Type
Page
1-3
Empty room
pg. 8
4
Trap
pg. 11
5
Hazard
pg. 10
6
NPC
pg. 12
7
Monster mob
pg. 13
8
Solo monster
pg. 14
9
Boss monster
pg. 15
10
Treasure
pg. 16
11-12
Roll two and combine
-
CRAWLING EVENTS
Roll 2d20 on the Crawling Events
table every round (including
combat)!
CRAWLING EVENTS
d20
Light mishap
2-9
-
11-19
20
d4
Details
1
Frog. A big frog tries to
grab light with its tongue.
DC 12 DEX to keep hold.
2
Bog Mist. Fog fills the
room. Will extinguish the
light in 1d4 rounds.
3
Strobe. Light sputters and
flares. Total darkness every
other round, 1d6 rounds.
4
Photophobia. Random PC
panics for 1d4 rounds, tries
to extinguish the light.
Details
1
10
LIGHT MISHAPS
Encounter, pg. 18
Grant a luck token
ENCOUNTERS
NAMES
Also see Encounters, pg. 18.
Humanoid. Igor, Jenny, Farz'lan,
Roglin, Nim, Gregor the Esquire,
Bilfus, Dardane, Meeks, Timmy,
Kristis, Laurel the Just, Morgara,
Hruthor, Bardal, Khazad Mor,
Verdex, Arbyll, Intril, Ayes,
Baron, Myr, Past Wolfenton,
Harmonious Butterfly, Bob, Lady
Hazel, Matilda, Rosie, Bernaise,
Khalsee, Marvolo, Alykacha.
DISTANCE
d6
Starting Distance
1
Close
2-4
Near
5-6
Far
ACTIVITY
2d6
Activity
2-4
Hunting
5-6
Eating
7-8
Building/nesting
9-10
Socializing/playing
11
Guarding
12
Sleeping
REACTION
2d6 + CHA mod
Attitude
0-6
Hostile
7-8
Suspicious
9
Neutral
10-11
Curious
12+
Friendly
Monster. Scrab, Yothal, Stinksy,
Mizzenmist, Urbloo, Tattertale,
Orbus, Skarleen, Croako, Bilbool,
Flavius, Gorkeem, Fizzlesticks,
Skundle, Brog, Riffraff, Geminis,
Skutskut, Darlak, Deneb, Leem,
Vaska, Ziderak, Snarlo.
Location. The Cyst, Blob Home,
Wats, The Cave, The Shards, The
Loft, The Gazebo, The Cathedral.
THINGS
The Gygaxian Grimoire,
collection of miniature glass
animals, six silver thimbles, lily
pad hat, rusty bucket, The Door,
thin sheet of clear crystal, a bag
of red mushrooms, a broken
helm, conductor's wand, bag
of marbles, eye in a glass jar,
rabbit's foot, cactus, lost sock.
Shadowdome
Thunderdark
Dedication
To Jason Barker, a cherished member of the Shadowdark
community who will be missed. We roll the dice and fight the
darkness in his memory.
Editing, Layout, Art
Editing by Doc and Kelsey Dionne. Trade dress by Brandish
Gilhelm. Layout by Kelsey Dionne. Art: Cover and pg. 6 by Lucas
Korte. Pg. 12 by Matt Morrow. Pg. 21 by Carlos Castilho. Pg. 22 by
Lucas Korte and Jessee Egan. Rear endpaper by Moss.
Contributors
Sticky, Mark Boudreau, Logan Gianella, Beau Yarbrough, A.
Denbigh Strickland, Benjamin Billman, Brennan Haase, Joe
Hattery, Chem Geek Tim, MagiMaster, Frey Bugbee, aWeeLaddie,
House DM, Kelsey Dionne, Kavross, iamrpgdm, Daniel Green,
kustenjaeger, Qmungous from Rolling Brownout RPG, LaurinDavid Weggen, Moth Wuertzer, Shimrath, Neal McNamara,
Micah Abresch, Sebastian Garcés, Scott Swalwell, Mathias Cnota
Harpsøe, Khalidar Edgewood, Ben Forde, Chris Powell, Dan
Deegan, Teece Milley, Some Idiot Games, Jeri Honeywell, Matt
Dietrich, Jason L. Napier, Alex Laferriere of ORANGEeyes, Rayqua,
Alex Jayner, Travis Markel, Pedro Costa, Dan Frederick, Corentin
Palanchini, Ryan Witham, Steve Bladek, Crisgarner, Andrew
Straight, Jeremiah Johnston, Sarah Angell, KeroZelvin, Ezequiel
Rodríguez Andino, H.W.L. Kabocha, Abigail "Nights" Rogers, K. Z.
The 13 yo., John Norman.
Contents
Introduction
7
Empty Room
8
Hazard
10
Trap
11
NPC
12
Monster Mob
13
Solo Monster
14
Boss Monster
15
Treasure
16
Encounters
18
New Monsters
20
6
Introduction
I
n Lake Geneva, WI, a
legend was born.
Now, 50 years later,
we return to the home
of Dungeons & Dragons
to celebrate the game's
golden anniversary.
This document is a
megadungeon generator
for Shadowdome
Thunderdark, a glorious
event held at Gary Con 16.
Creating this dungeon
was a community effort,
wrought by the hands of
Shadowdark's finest and
darkest minds. There is no
greater furnace of creation
than the darklings!
In this mighty challenge,
two teams of crawlers will
fight their way through
a randomly generated
mega-dungeon at the
same time to win gold,
glory, and fame.
Each group of characters
must pursue a magic
feather that escapes their
grasp in the opening
moments of their trial.
The black feather and
white feather each
grant a mighty wish, if
captured! What might the
characters seek with such
power?
The forces of this dungeon
will not allow easy victory.
Its halls are filled with
crystalline horrors,
petrifying monstrosities,
devious traps that confuse
and dismay, a tuneless,
fluting music of eerie and
maddening notes...
There is only one way to
triumph.
Roll high and don't die!
-Kelsey Dionne, Feb. 2024
7
Empty Room
EMPTY ROOM
d100
01
02-03
Details
Neon sign alternately flashing "Shadow" then "Dark" in blacklight
A gentle, perpetually falling snow comes from a cloudy ceiling
04-05 A petrified stingbat that still has some liquid blood in its gullet
06-07 A glass panel on the wall; moving images of 3D snaking pipes
08-09 A pond of water a foot deep; sign that says "No drowning."
10-11
The room is a huge chessboard with giant, crystalline pieces
12-13
A battered map with a barely legible title: The Arcane Library
14-15
An otherwise normal tree grows here, bearing crystalline fruit
16-17
The walls are meat of uncertain type and origin
18-19
A glowing crystal juts from the floor; changes color if touched
20-21
An in-progress game of solitaire has been left on the floor
22-23
Floor is covered in steely, blue-black smoke
24-25
A pile of skeletons of with a sign that says "Killed by Doc"
26-27
The floor is covered in sticky, harmless goo
28-29
Beautiful, ethereal music fills the room; its origin can't be traced
30-31
Wall murals depicting a big fish turning humans into frogfolk
32-33
Windowless, yet sun beats down on a floor covered with sand
34-35
A large koi pond fills the center of the room
36-37
The air is still, but open flames flicker wildly as if windblown
38-39
A dozen stone statues depict frogfolk warring with goblins
40-41
A desk, chairs, and strange little polyhedral shapes of crystal
42-43
Pages of blank paper hover and drift around on a gentle wind
44-45 Four dead giant frogs are sitting in a boiling hot tub
8
EMPTY ROOM
d100
Details
46-47 The walls have ears, literally; ears from every sort of creature
48-49 A large, empty cage in the corner and feathers of an unusual size
50-53
The crystalline floor lights up briefly wherever people step
54-55
Spooky theremin music with no discernible source
56-57
Murals depicting frogfolk worshipping a glittering mega-fish
58-59
Frog and pig puppets sit holding hands. The pig looks upset
60-61
An orrery depicting an unrecognizable planetary system
62-63
A torn note: "The airspeed velocity of an unladen swallow is—"
64-65
Hundreds of candles melted onto every available surface
66-67
A colossal, wet eye stares down from the ceiling
68-69 A pair of knitted socks that smell extremely swampy
70-71
A wall mirror shows PCs a reflection of the person playing them
72-73
Ceiling tentacles that fruitlessly try to grab at you and your gear
74-75
Five inert skeletons and a sign that says "Only idiots die in here"
76-77
Bombed-out ruins of a miniature metropolis; you feel like a kaiju
78-79
Luminescent moss (neon green and yellow) clings to the walls
80-81
The molted skin of a giant snake covers the floor
82-83
A mural of a dark-haired woman holding a pen over a book
84-85 Rows of benches face towards a stage; playbills litter the floor
86-87 A solitary, blue crystal juts from the floor; melodies drift from it
88-89 The floor and walls are covered in green, sticky mushrooms
90-91
The walls are lined with bookshelves; each book is blank
92-93
Shelves full of owl-themed clocks and figurines line the walls
94-95
Crystal clusters sing when approached
96-97
Clothing racks full of variously colored robes fill the room
98-99
A carving on the floor reads: "IOU 10 HP," signed The Vampire
00
A massive, firelit statue of a gold stingbat; missing a ruby eye
9
Hazard
HAZARD
d12
10
Movement
Damage
Weaken
1
Lights that
Painful harmonic
disorient and slow reverberations (1d6)
Psychic torment
(Temp. loss 1d4 WIS)
2
Sewage waste
spray
Caustic poison (DC 9
CON or 1d6)
Inhibits stealth; the
PCs stink terribly
3
Patch of spiky
mushrooms
1 damage/round
Distracting; spells
DC 15 to cast
4
Ankle deep
crystal dust
Blistering skin (touching
deals 1d4)
Shiny visible
sparkles that cling
5
Crystal rock fall
Sharp cuts (1d4)
Blinding motes
6
Ooze pit
DC 13 CON or DISADV on Causes fear of small
attacks and checks
objects for 1d4 rds.
7
Slippery floor
DC 12 DEX or fall onto
your own weapon
Sprain (move half
speed 5 rounds)
8
Disembodied
heads of old men
floating in air
Piercing screams (DC 12
CON or 1d4)
Alerts nearby
enemies
9
Solid, sentient lily
pads
Ankle-bites for 1
damage/round
Induces intense
craving for insects
10
Musical notes
dancing in air
Ear-stabbing (1 damage/
round)
Hypnotic
fascination
11
Waist-deep mass
of tiny frogs
Toxin (DC 12 CON or 1d6
per round in hazard)
DC 12 CON or dazed
until out of hazard
12
Blinding prism
field
Raining petrified
stingbats (get hit for 1d4
damage per round)
Nonsensical
geometry (DC 12
CHA or stunned for
1d4 rounds)
Trap
TRAPS
d12
Trap
Trigger
Damage or Effect
1
Shrinking Spores
Grabbing a false
crystalline gemstone
shaped like a toadstool
Shrinks creatures
within close by 1d6
inches per round
until doll-sized
2
Harmonic Crystals Loud noises
1d6 or confuse
Precious Dart
Pressure Plate
1d4 damage and
can't speak any
words other than
"Precious" for 1 hour
4
Dazzling
Swatting a glowing,
neon insect
Insect explodes,
blinds the target for
1d6 rounds
5
Crystal Bridge
Over 20' Pit
Too much weight (2+
people)
2d6 from fall, 1d6
from crystals
6
Neon Goo
Stepping within close
Faerie Fire effect
7
Petrifying Music
Circle carved on floor
DC 12 CON or end
turn
8
Tar and Feathers
Disturbing gold chicken
statue on pedestal
DC 15 DEX or blind
for 1d4 rounds
9
Crushing Stone
Columns
Stepping beneath
DC 15 DEX or 1d6
10
Heart-Seeking
Harpoons
Talking over each other
1d6 damage and
get reeled in
11
Swarm of
Otherworldy Flies
Walking through boggy
puddle
DC 12 DEX or torch
is blown
12
Grotesque stone
idol
Eye contact
Partial petrification
(1d4: arm, leg, head,
chest)
3
11
NPC
NPC
d12
Ancestry
Align
1
Frogfolk
C
Seeks to summon frog death god
2
Frogfolk
N
Looking for a quiet place to fish
3
Frogfolk
L
Knight seeking to destroy undead
4
Goblin
C
Wants to start a gambling ring
5
Goblin
N
Door-to-door evangelist, preaches the
Shimmering Faith of the crystal that has
overgrown his brain
6
Human
L
Crystal merchant wizard seeking to spread
crystal magic
7
Human
C
A traveling "peddler" (thief) who got lost,
looking to sell his trinkets
8
Dwarf
N
Crystal enthusiast. Biiiiig crystalhead, this
guy. What a nerd
9
Kobold
N
A learned scholar of trap-making arts. Out
exploring and studying trap design
10
Elf
C
Secretly possessed by a brain-controlling
parasite
12
Quality
11
Goblin
N
Obsessed dancer, perfecting pirouettes.
Grateful for dance music, wrathful if the
rhythm is disturbed
12
Mechanical
Frogfolk
C
Was made to help travelers but snidely
refuses to do so
Monster Mob
MONSTER MOB
d12
Monsters
Weirdness 1
Weirdness 2
1
2d4 frogfolk*
Speech causes madness
Rise as zombies
after dying
2
2d4 frogfolk
knight*
Throat sack glows when
inflated (holding breath)
Sophisticated,
courtly
3
Rave: 2d4
Colorful, beaded jewelry.
skeletons (frogfolk) Carrying crystal ball
Magical music: DC
12 WIS or dance
4
2d6 terrorbirds
(velociraptors)
Immune to poison and
petrification
Tough skin (+2 AC)
5
Mushy swarm*
Spore spray; 1/combat,
all in near DC 12 CON or
paralyzed 1d4 rounds
Stealthy. ADV on
DEX checks to
sneak and hide.
6
2d6 mutated
stingbats
AC +2 (wearing tophats)
Can teleport near
in sulfurous bursts
7
1d6 neon dogs
(mastiffs)
Glow in bright neon
colors. Red = fire, green
= poison, blue = cold
Can walk on walls
and ceilings
8
Evil duplicates of
PCs
Black eyes, goatees
Evil theme music
(loud)
9
2d6 oversized
frogfolk*
Slow; must either attack
or move on turn, not
both
Deafening belch
(DC 12 CON or deaf
1d4 rounds)
10
2d4 exploding
toads*
Each plays a musical
note when jumping
Dramatic chord
when it dies
11
2d4 vampire
stingbats*
Harmed by sunlight
Only killed by stake
to the heart
2d6 bogles*
Slippery; ADV on DEX
checks to escape
restraint
Glutton; in near of
food, DC 9 WIS or
waste turn eating
12
*New monster.
13
Solo Monster
SOLO MONSTER
d12
If no statblock, just use bears, chuul, or naga. Modify with weirdness effects.
14
Monster
Weirdness 1
Weirdness 2
1
Enormous frog
High jump, lands with
crushing weight
Paralyzing breath
(DC 12 CON or 1d4
rounds)
2
Mesmerotoad
Otherworldly, oscillating
eyes that hypnotize
Eats 1 random gear
in place of attacks
3
Crystal golem
Shoots crystal shards
Flashing neon lights
4
Arachnid hog
Fast (double move)
Can climb walls
5
The Main, Maine
Coon (lion, 25 HP)
Voice and intelligence of
Cheshire cat
Horse-sized, hungry
for humanoid ears
6
Mantatrice
(manticore body,
cockatrice head)
Breathes petrifying
smoke (DC 9 CON to
resist)
Flings heat-seeking
barbs that change
direction mid-air
7
Crystalline giant
crab*
Vulnerable to shattering
Sleepy; might doze
off during combat
8
The hateful
goose*
Basically a dragon;
immune to fire, fly near
Breathes fire and
hate
9
Crystal-warped
crocodile
Can cast magic missile
Telepathic
10
Cursed conductor
Can force movement
with wand-like stick (DC
15 WIS to resist)
Whistles creepy
songs
11
Gelatinous cube
Has glow sticks inside it.
Shoots prismatic lasers
Able to phase
12
Oil Monkii (gorilla,
Tries to steal oil flasks,
swap STR and
willing to trade if caught
DEX)
ADV on DEX checks
to pick pockets
*New monster.
Boss Monster
BOSS MONSTER
d10
Monster
Weirdness 1
1
The Lavender
Mega-Toad*
Is extremely hungry and can be distracted for
1d4 rounds by food
2
Shibberwins the
Night Hag
Rides in an iron cauldron (fly double near). 2d4
toads leap from the cauldron each round
3
The Shimmering
(aboleth)
A fallen star of outer nights, sunk into the
ground. Source and controller of the symbiotic
crystals. Worshipped by the frogfolk. Curse
ability turns target into a frogfolk*.
4
Ossified swamp
dragon
Undead. Breath weapon is a cloud of undead
hands. Missing its back half.
5
The Knight of the
Pond
Frogfolk knight* riding a huge frog
(crocodile). Mount can attempt to swallow
a target in near (DC 12 DEX save to avoid
sticky tongue, DC 12 DEX or STR to escape).
Swallowed creatures take 1d4 damage/round
6
Was sent back in time to ensure that the
Crystaltron 6400b
party fails. Constructed of futuristic crystalline
(stone golem)
technology
7
Rahot, Sand Ooze
Glowing, neon-red silicon sludge (LV 10 black
pudding, 3 tentacle +6, 2d6) that burns tunnels
through crystalline walls
8
The Jagged
Crown*
Insists that it is actually a wizard who got
stuck in a polymorph spell
9
The Opal-Lich
(lich)
Eyes of sapphire, bones of opal. Filled with
spiders. Tending a vegetable garden (prize
tomatoes) when discovered
10
Guhuru, King of
Spores
LV 8 mushroomfolk (3 slam +6, 2d6). Smokes
neon herbs. Body emanates spores (every 2
rounds, DC 12 CON or fall asleep 1d4 rounds)
*New monster.
15
Treasure
TREASURE
d100
Details
01
Lucky frog coffin. Can cancel DISADV on one roll per day.
02-03
Crystal statuette of eldritch frog god with too many eyes.
04-05 Humming jawbone. Hums songs when held.
06-07 Vial of tarrasque ichor. Drink to regain 4d10 HP .
08-09 Pink rock salt lamp. Glows as a torch. Tastes salty.
10-11
Gold medallion. Engraved with frog-king. ADV vs. petrification.
12-13
Crystalline sword. Beautiful, but breaks if used in combat.
14-15
Ultimate Guide To Throwing A Party. +1d8 on next carousing.
16-17
Great white wolf pelt. Smell blood up to far distance. +1 AC.
18-19
Crystal goose with a golden egg inside. Very delicate.
20-21
Ring of Incompetence. -1 on all rolls. Falls off if you read a book.
22-23
Froggy Socks of Sticky Feet. You can climb on vertical surfaces.
24-25
+1 Leather Armor. It's a swarm of blue frogs that stick to you.
26-27
Potion of Confidence. You're sure it worked as you wanted.
28-29
Neon pin. 1/day, can illuminate as a torch for 1 round.
30-31
Horror scream box. 1/day, all enemies check morale. Very loud.
32-33
Potion of Petrifying. Petrifies drinker for 1d6 rounds.
34-35
Mask of the Froglord. 1/day, use tongue to pull a far target close.
36-37
Ceremonial cloak. Decorated with countless glass beads.
38-39
Memory of Joy. Glittering crystal bottle of stolen bliss.
40-41
Lord of the Flies. An illuminated manuscript of frogfolk history.
42-43
The Joy of Pies. Cookbook written in Orcish. First edition.
44-45 Growstick. Break crystal to double your size for 2d4 rounds.
16
TREASURE
d100
Details
46-47 Bottled scream. When opened, all who hear DC 15 CON or 0 HP.
48-49 Shimmering shard. Crush to get +1 to spellcasting for 1 hour.
50-53
Golden dwarf-head mug. Spits out non-alcohol poured inside.
54-55
Primordial Dragon Dagger. Kind of junky. +0 magical dagger.
56-57
Cup of Snakes. All liquid poured inside becomes poisonous.
58-59
Glowstick. When cracked, glows with neon light for 15 minutes.
60-61
Death Stench Potion. Undead ignore the drinker for 10 rounds.
62-63
Ring of Sending. Wearer can cast sending (no check) 1/day.
64-65
Lyre of Levitating Bone. When played, causes bones to float.
66-67
Dagger of Scrying. Can cast scrying on any creature hit by it.
68-69 Bowl of Expanding. Highly decorative, shrink or grow 3x its size.
70-71
Music Box. When handle turned, attracts mutant giant bees.
72-73
Tuning fork. Strike on surface to counter sound-based effects.
74-75
Gold Gloves. Black leather, but turn white when touching gold.
76-77
Piercing Flute. 1/day, all who hear DC 15 CON or 1d6 damage.
78-79
Chimera's Fang. +1 shortsword. +1d6 damage if natural 18+ to-hit.
80-81
Polly pills. 1d6 per bottle. Until next rest, detect all secret doors.
82-83
Frogging Pants. Jump near from standstill. Frogs attack you first.
84-85 Harp of Croaking. Crystal strings. You can speak with frogs/toads.
86-87 Sticky hand. Whip up to near to grab any hand-sized object.
88-89 Crystalline music box. 1/day, play for 1 luck token. Very loud.
90-91
Royal honey. 1d4 doses. Eating provides full benefit of resting.
92-93
Jar of frog milk. One dose of totally lethal poison (if ingested).
94-95
Pale emerald. Eat it for your DEX to become 18 until you rest.
96-97
Tin box; frog with tophat and cane inside. Lovely baritone voice.
98-99
Void Splinter. Stick in skull for +1 spellcasting. Attracts outsiders.
00
Essence of Mugdulblub. 1d4 doses; become ooze for 1d4 rounds.
17
Encounters
ENCOUNTERS
d100
Details
01
"Statues" that look eerily similar to the PCs, faces frozen in terror
02-03
A djinni that makes muffled yelps from a corked bottle of mead
04-05 Geolini (friendly, shattered rubble of gargoyles) say hello
06-07 A leprechaun tries to pickpocket the richest PC
08-09 A ghost loiters over a corpse of a former adventurer
10-11
A cluster of psychic crystals wants to learn about the world
12-13
A hulking froghemoth (mutated giant frog) appears
14-15
6 frogfolk* carry a palanquin with a frogwitch (night hag)
16-17
An ogre in a jester outfit who tells painfully bad jokes
18-19
A note on the ground: "I can't stop hearing screams! Run away!"
20-21
A shadow in the corner whispers: "Where is my precious?"
22-23
A croaking riot of 5d6 exploding toads* hop into sight
24-25
A lizardfolk shaman and 2 frogfolk* carry a tied-up human
26-27
A crystal choir sings psychic songs about the PCs' demise
28-29
2 goblins call to gamble. PCs win 2 times, then get scammed
30-31
A rival crawler offers fake potions of healing for 100 gp each
32-33
A lost dog (mastiff) joins the party; +1 XP if given a good name
34-35
4 viperians chase 3 frogfolk* to cook them into a stew
36-37
A dessicated, well-dressed corpse; its bag is full of rock candy
38-39
A gentle frost dragon offering tea to all they encounter
40-41
A statue in a weird pose; if mimicked, it animates and offers help
42-43
A skeleton with a lantern leads a skeletal horse; it ignores you
44-45 Toxic, neon frogs that can only speak in techno beats
18
*New monster.
ENCOUNTERS
d100
Details
46-47 A flesh golem made of frogfolk tinkers with a delicate music box
48-49 A scared princess in a fluffy dress looks for a way out
50-53
A knight blocks way, demanding a duel. Impervious unless 1 vs. 1
54-55
A scientist from Earth has stumbled here through a tear in reality
56-57
A tiny mushroom creature tries to lead you to a random treasure
58-59
A locked chest (DC 18). If opened, 1d4 angry kobolds emerge
60-61
A group of 2d6 frogfolk* share a sumptuous feast
62-63
1d4 pink oozes (gray oozes, smell like bubblegum) burble up
64-65
An old man plays at figurines + dice. He disappears; a map is left
66-67
A lost bandmate is looking to jam with a willing group
68-69 A knight has been trapped like a statue by his rusted armor
70-71
1d4 vivianite corpses* sit cross-legged around a dead campfire
72-73
A dying frogfolk*; he's about to rise as a vampire spawn
74-75
A radiant human (vampire) is impaled alive on a quartz spire
76-77
3 goblins flee a purple giant frog with a magenta tongue
78-79
A small undead frog creeps from a corner and starts croaking
80-81
1d6 frogfolk* use lily pads to shepherd 1d4 giant frogs
82-83
Rival crawlers appear; they're senile older version of the PCs
84-85 The Queen of Darkness appears and changes reality in one way
86-87 6 crazed stingbats wearing glow necklaces flap into the room
88-89 An extradimensional window opens; a random treasure falls out
90-91
Ezmerelda the ancient troll wants to knit someone a pair of socks
92-93
An odd dwarf says he's lost his marbles; 100 gp for their return
94-95
3d6 mouse-sized cockatrice (1 HP) peck and petrify nearby feet
96-97
The Wandering Merchant plays music on a singing crystal
98-99
The Lavender Mega-Toad* crashes down the passage
00
An angel blesses and fully heals all PCs in return for godly service
19
New Monsters
BOGLE
Greasy, potato-shaped fey.
AC 12, HP 11 ATK 1 fist +1 (1d6), MV
near, S +1, D +2, C +2, I -1, W +0,
Ch +0, AL N, LV 2
Slippery. ADV on checks to
escape restraints or resist magic.
Glutton. When in near of food,
DC 9 WIS or waste turn eating.
CRYSTALLINE
GIANT CRAB
EXPLODING TOAD
Groups of tiny toads in an array
of bright, vibrant colors.
AC 9, HP 1, ATK 1 bite +1 (1), MV
near, S -4, D +1, C -2, I -4, W -4,
Ch -4, AL N, LV 0
FAFO. Explodes at 0 HP. All in
near DC 12 DEX or 1d4 damage.
Frail. Automatically fails stat
checks to avoid damage.
FROGFOLK
A wagon-sized, crystalline crab
that shoots freakin' lasers.
A short humanoid frog with
brightly colored skin.
AC 15, HP 24, ATK 2 pincer +4
(1d8) and 2 prismatic laser, MV
near (swim), S +3, D +0, C +2, I -3,
AC 11, HP 5, ATK 1 spear (close/
near) +0 (1d6) or jump, MV near
(swim), S +0, D +1, C +1, I +0, W +0,
Ch +0, AL N, LV 1
W +0, Ch -3, AL N, LV 5
Prismatic Laser. Near range,
one target. DC 15 DEX or 1d8
damage.
20
Jump. Jump double near.
FROGFOLK KNIGHT
A humanoid frog wearing a
tarnished breastplate.
AC 17 (plate mail + shield), HP 14,
ATK 2 bastard sword +3 (1d8) or
jump, MV near (swim), S +3, D +0,
C +1, I +0, W +1, Ch +0, AL N, LV 3
Jump. Jump double near.
HATEFUL GOOSE
A pony-sized goose. Dead
black eyes, serrated beak, long
twisting neck. Breathes fire.
AC 12, HP 27, ATK 2 bite +4 (1d6)
and 1 wing buffet +4 (1d4) or 1
fire breath, MV near (fly, swim), S
+4, D +2, C +1, I +2, W +0, Ch -1, AL
C, LV 5
Immune. Immune to mindaltering effects and fire. Not
even the gods can answer
questions about the goose.
Fire Breath. Fills a near-sized
cube extending from goose. DC
15 DEX or 3d8 damage. Cannot
use again for 1d4 rounds.
MUSHY SWARM
Small carnivorous mushrooms
that appear as rocks.
AC 12, HP 18, ATK 3 bite +2 (1d6)
or spore spray, MV near (burrow),
S -3, D +2, C +0, I -3, W +1, Ch -3,
AL N, LV 4
Spore Spray. All in near DC 12
CON or paralyzed 1d4 rounds.
Stealthy. ADV on DEX checks to
sneak and hide.
21
VAMPIRE STINGBAT
Annoyance and abomination.
AC 12, HP 5, ATK 1 beak +2 (1d4 +
blood drain), MV near (fly), S -2, D
+2, C +1, I -2, W -1, Ch -2, AL C, LV 1
Undead. Immune to morale
checks.
Blood Drain. Attach to bitten
target; auto-hit the next round.
DC 9 STR on turn to remove.
Sun Sensitivity. Takes 3d8
damage each round while in
direct sunlight.
THE JAGGED CROWN
8 gemstone legs sprout from the
cabochons circling a crown that
still sits upon the severed head
of its previous owner.
VIVIANITE CORPSE
Decomposing corpses animated
by the greenish gray crystals
sprouting from its skin.
AC 12, HP 11, ATK 2 bite +2 (1d8),
MV near, S +2, D -2, C +2, I -2, W
-2, Ch -3, AL C, LV 2
Undead. Immune to morale
checks.
Infected. Humanoids killed rise
as vivianite corpses in 1 hour.
22
AC 20, HP 26, ATK 2 bite +4 (1d6)
and 1 mineral glob, MV near
(climb), S -1, D +3, C -1, I +3, W +0,
Ch -3, AL C, LV 6
Undead. Immune to morale
checks.
Infected. Humanoids killed rise
as vivianite corpses in 1 hour.
Mineral Glob. One target in near
DC 15 DEX or become petrified
and take 1d4 damage each
round. DC 15 STR on turn to
break out and end the effect.
THE LAVENDER MEGA-TOAD
A giant-sized, purple toad. Its single eye swirls with a sick, neongreen light. Motes of energy whirl around its pupil and coalesce into
laser beams when it focuses its hateful stare on one thing for more
than a few moments. Chunks of stone and crystal dot the beast's
purple hide, and its broad mouth occupies most of its body. The
Lavender Mega-Toad is hungry, destructive, and foul-tempered.
AC 16, HP 57, ATK 2 thrash (near) +8 (1d12) and 1 tongue (near) +8
(1d12 + swallow) or 1 disintegrate, MV double near, S +5, D -1, C +3, I -3,
W +0, Ch -3, AL C, LV 12
Deep Dweller. Immune to harm from fire and cold. Amphibious.
Disintegrate. One creature or object in far DC 12 DEX or turned to
dust.
Leap. In place of attacks, move far in a straight line and make one
thrash attack. On a hit, triple damage.
Swallow. DC 15 STR or swallowed whole. Total darkness inside and
2d8 damage per round. Toad regurgitates all swallowed if dealt at
least 15 damage in one round to the inside of its gullet. There are 3
rolls on the below table inside its gut at any given time.
TREASURES INSIDE GUT
d4
Details
1
A random roll on the Treasure Table, pg. 16
2
A random magic potion (Shadowdark RPG pg. 286)
3
A random magic armor (Shadowdark RPG pg. 294)
4
A random magic weapon (Shadowdark RPG pg. 292)
“Its steps shook the very ground beneath us! That
horrid green eye will haunt my sleep forever..."
-Crawler notes on The Lavender Mega-Toad
23
Bring Out Your Dead
List the fallen of the Shadowdome Thunderdark below. Yes, that's
right. Write in this zine. Do it. It will become truly your own.
Name
1
2
3
4
5
6
7
8
9
24
Cause of Death
Name
Cause of Death
10
11
12
13
14
15
16
17
18
19
20
25
So, Role Playing Games, hunh?
They are games in the truest sense of the word. They run the
spectrum from crunchy, math based edifices that tower over the
plains of apathy, to loosely defined and arbitrary shower thoughts
scribed electronically and laughed at around the world. They all hold
within them that spirit of nerd-dom and respect for those who have
gone before, those who have persevered and stayed the course of
their own epic journeys.
TTRPGs give us bonuses to our personal stats, they grant us
confidence, humility, anger, joy, love, acceptance, serenity, humour
and integrity. They train us. They have gone from being what you
hide to what you seek. They find the spark of a child within all of us
and kindle that fire into life. They accept all ages, genders, creeds,
cultures. They embrace and comfort unrestricted.
They have always been there for me.
TTRPGs are there for me now and past, through illness, addiction,
recovery, depression, pain and sorrow. They have been there when
even it seemed I had no more rolls left in me. They give me the
chance to connect with all the maniacs and fellow humans of The
Arcane Library, they offer me the privilege to travel from chair to
chair, table to table. They allow me to explore worlds that I would
never have imagined in my wildest dreams, both good and bad.
They grant me freedom and delight. What have they offered to you?
A Brief Note on The Shadowdome:
The Shadowdome is a mental prison of unrestrained creation, a
place where the world is built just as much by the players as the
GM, by the offhand comments of a passerby as the (beautiful and
seductive) Shadowdark Core Rulebook (it’s SO sexy). It first came
into existence upon this plane in the human year of 2019 as a stupid
idea to create fun out of slog. Since then it exists within all of us in
one avenue or another. It lives presupposed that everyone can win,
and that all are greeted by memnon at the end. It welcomes you,
specifically.
Praise Memnon!
-DocSpecial thanks, in no particular order, to Lady Hazel, Moss, Kelsey,
Tath, WATS, Memnon and every normal human.
Fonts
JSL Blackletter font © 2023 Jeffrey S. Lee. Old Newspaper Types font © 2023 Manfred
Klein. Fullteron font © 2023 Emyself Design. Montserrat font family © 2023 Julieta
Ulanovsky, Sol Matas, Juan Pablo del Peral, Jacques Le Bailly.
Legal Information and Attribution Statement
Published by The Arcane Library, LLC. Shadowdark RPG © 2023 The Arcane Library,
LLC. The Arcane Library® and Shadowdark™ are trademarks of The Arcane Library,
LLC. All contributors retain copyright to their work and have granted perpetual,
non-exclusive distirbution rights. This work includes material taken from the System
Reference Document 5.1 (“SRD 5.1”) by Wizards of the Coast LLC and available at
https://dnd.wizards.com/resources/systems-reference-document. The SRD 5.1 is
licensed under the Creative Commons Attribution 4.0 International License available
at https://creativecommons.org/licenses/by/4.0/legalcode.
Shadowdome
Thunderdark
A mystical feather will grant you and your
companions a wish... if you can catch it before
your enemies do!
This megadungeon generator made its debut
at Gary Con 16 (March 2024).
It was designed collaboratively by the
ShadowDark community for maximum fun
and peril!
Inside is all you need to create rooms and
encounters. Use these tables with any map.
The Shadowdome Thunderdark awaits!