DM ENGINE vs Polymyth

DM Engine is a full AI Dungeon Master for D&D 5e — not just a chatbot, but a structured game master that builds scenes, runs combat, tracks your campaign, and delivers a cinematic tabletop experience without needing a human DM. NEW: PLAY WITH FRIENDS Host a party of up to four. Share a join code, and your friends drop into the same living story — no scheduling, no human DM, no one left waiting. Everyone acts in their own turn, rolls their own dice, and fights in the same initiative order. One Guild subscription hosts the whole table; joining is free. WHAT IT DOES Generates opening scenes, NPC dialogue, and story beats Runs full D&D 5e combat — initiative, HP, conditions, death saves Handles skill checks, saving throws, and attack rolls with real dice Remembers everything across sessions — decisions, deaths, relationships Builds a living world that reacts to your choices DEATH MEANS SOMETHING Drop to zero and you're rolling death saves — flat d20, three failures and that character's story ends. Permanently. No resurrection, no undo. Create a new character and the DM writes them into the story at the next turn of the road. CAST LIKE A SPELLCASTER Open your spellbook mid-fight, pick your targets, watch your slots. Attack rolls against real AC. Inspiration to reroll when the dice betray you. Long rests restore you — if the story lets you rest. CAMPAIGN SETUP Choose your world setting, tone (heroic, dark, horror, comedy), and ruleset. Load a lore pack — Forgotten Realms, Ravenloft, Eberron, or the Nine Hells of Avernus. Create your character with class, race, background, and backstory. The DM weaves your history into everything. THE DM VOICE Built on Claude, one of the most capable AI models available. The DM narrates like an author — specific, present-tense, cinematic. No "adventure awaits." No breaking character. Real consequences for every action. FULL SESSION MEMORY The app tracks your campaign across sessions using a compression system that distills key events into permanent facts. The DM remembers who you killed, what you promised, and what you broke. SESSION RECAP Auto-generated summary after every session. XP log, key moments, loot, and decisions. Your campaign history builds over time. Built on the D&D 5e SRD 5.1 under Creative Commons Attribution 4.0. Not affiliated with Wizards of the Coast. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://j37953242.github.io/dmengine-legal/#privacy

Roll a hero. Gather your party. Chase quests through hand-crafted 5th Edition worlds — fight tactical combat, roleplay in-character, level up session to session. Your AI Game Master is always ready, solo with AI companions or live with friends. The world adapts to every choice you make. A LIVING WORLD THAT REACTS • Every NPC has memory, motive, and tactics — bards remember your insults, merchants haggle, enemies coordinate • Hand-crafted adventures with proper pacing, mystery, and branching paths — not procedurally generated filler • The world keeps score — quest beats, factions, allies, betrayals PLAY IN CHARACTER • Speak as your hero — flirt, lie, intimidate, bluff your way through • Whisper to one ally or address the whole party • The GM answers in-fiction, every time REAL 5TH EDITION COMBAT • Full ability scores, classes, spells, conditions — nothing simplified • Attacks of opportunity, concentration saves, legendary actions, lair effects • Positioning, reactions, ongoing effects — all tracked, all real YOUR HERO PERSISTS • Level up, prep spells, equip loot — your character grows with every quest • A campaign journal captures every encounter, every NPC met, every choice made • Pick up exactly where you left off, on any device LAUNCH ADVENTURE — GOLDVALE'S LAST HOPE A snowbound mountain village. White dragons stirring in the peaks. Form a party of four, brave the Stormfang, and decide the fate of a people. Hand-crafted, hours of play, multiple paths through. WHY POLYMYTH • No GM scheduling — pick up your campaign any time • No rules memorization — the GM handles every roll, save, and edge case • Full 5th Edition, not simplified — depth you'd get at a real table • AI party members that actually play — they fight, plan, banter, grow • Adventures that are written, not auto-generated — quality you can feel Polymyth uses the 5th Edition SRD rules, licensed under Creative Commons Attribution 4.0. Polymyth Tokens are a per-message currency that covers AI compute. New players get a generous starting balance to play through the launch adventure.