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Mammoth Island is a game design duo consisting of brothers Mathew Iantorno and Michael Iantorno. We design adventures, rules, and resources for tabletop roleplaying games.
Phylactery
Thumbledore's Tiny Dungeons #5
Thumbledore's Tiny Dungeons #12
Non-Fungible Tentacles
Thumbledore's Tiny Dungeons #1
Thumbledore's Tiny Dungeons #10
The Acolyte
Thumbledore's Tiny Dungeons #4
Little Bones
Thumbledore's Tiny Dungeons #2
Mammoth Island Adventure Club
Oh No
Thumbledore's Tiny Dungeons #7
Thumbledore's Tiny Dungeons #3
One Page Dungeon Anthology
Thumbledore's Tiny Dungeons #8
Thumbledore's Tiny Dungeons #11
This Crypt Will Be Your Tomb
Inhuman Resources: Team-Building Activities for Humans
Thumbledore's Tiny Dungeons #9
Thumbledore's Tiny Dungeons #6
If you like Field Guide to Yokai check out...
APOCALYPSE FRAME   - An Illuminated Mecha RPG.
Time To Kill   - You've got time to kill, before it's time to kill.
The Rot King's Sanctum   - An OSR-style  dungeon module  for levels 1-3
Dream Quest   - A lost adventure game from 1980
No Landlubbers Allowed!   - Random buccaneers, boats and booty to spice up any high-seas dice game!
The Cloister   - A two player storytelling game about the last hour of a long journey home
Through The Void   - A Rules Lite Old School Space RPG
Stacks of Goblins   - A comedy roleplaying game of camaraderie, stupidity and spite.
Heavens of Khepri   - Play NPCs struggling for survival in a fictional MMO
End of The Line   - A game where you try to avoid dying gruesomely!
The Mall   - "It's The Thing, but set in a mall." A Liminal Horror module.
Raid on the Decadent Spires   - An opulent, Tower-Crawling adventure for the world’s most popular role-playing game
If you like Laser Monks in Outer Space check out...
The D1 RPG   - An RPG that only uses 1-sided dice.
DETHGASM   - a supremely stupid/awesome RPG
THE DEEP - 24XX Underwater Sci-Fi   - Adventures below the waves of a sunken earth.
LIGHT: Threshold   - An Unofficial Module for LIGHT
The Land and the People   - A solo journaling / mapping game following a cartographer on a mission.
Anomaly   - A Game About A Supernatural Investigation
Mons   - a TTRPG where you journey with monster pals
Aphelion Transit   - A Rules-Lite Sci-Fi RPG
Two Stand To Fall   - solo ttrpg. face a death you already faced.
BALIKBAYAN: Returning Home   - A Supernatural-Cyberpunk Revolution
And The Gunslinger Followed   - A solo TTRPG about one person following a criminal through the desert.
Novas & Nebulae   - Small, rules-lite sci-fi RPG played with dice and imagination
If you like 30 Days of MÖRK BORG check out...
MÖRK BORG BARE BONES EDITION  + ROTBLACK SLUDGE   - The free, plain text version of the world's loudest roleplaying game. A bit more sensible. Just as miserable.
Born of a Bloody Film   - 4 MÖRK BORG Horror Movie Monsters
The Procession of Saint Thrýla - A MÖRK BORG monster and her magic relics   - A pilgrinating dead saint in search of her lost relics
Serious Reading   - A solo RPG of absurd and sad opinions
Momentary Respite   - Camping rules for MÖRK BORG
The Pried Eye: A Trophy Dark Incursion   - Step into cosmic body horror and ego death
Lavandeiras & Biosbardos - Galician folklore for MÖRK BORG   - A ghostly encounter and a deceitful quest
Dental Manvscript | for MÖRK BORG   - More than six sets of teeth and how to extract them
CBR+PNK [OLD EDITION]   - Cyberpunk pamphlet TTRPG for one-shots
The Triangular, for MÖRK BORG   - A transfixing, two-dimensional daemon-thief based on a Swedish children's song
CBR+PNK Core   - Tabletop RPG for cinematic cyberpunk one-shots.
Cultists of Dying Gods | for MÖRK BORG   - 13 heretical cvltists; and guidelines for pstress and torture...