Infinite high-fantasy adventures, played offline in your browser
Mythforge generates worlds, quests, and characters locally on your device. No servers, no uploads, total privacy. Your data never leaves your device.
Plans from $5/mo — 7-day free trial included
A cursed library guarded by silent librarians
The air smells of old parchment and ozone. As you step into the Grand Athenaeum, the shadows lengthen. A silent librarian glides past, her eyes glowing with faint blue runes. She whispers a riddle: 'What speaks without a mouth, yet holds the world’s memory?'
Your private AI Dungeon Master
A high-fantasy adventure generated locally on your device. No servers, no uploads, total privacy.
On-device AI engine
The AI runs directly in your browser. Your data never leaves your device, ensuring 100% privacy and offline play.
Infinite replayability
Forge an original legend each run. Worlds, quests, and characters are generated uniquely every time you play.
Deep immersion
Experience a rich, narrative-driven adventure with a responsive AI DM that adapts to your choices in real-time.
Zero latency
Instant responses without server lag. Play smoothly even with unstable internet or completely offline.
Browser-native
No downloads or installs required. Launch your epic journey directly from any modern web browser.
Your story, your data
Since nothing is uploaded to our servers, your adventure history and secrets remain strictly yours.
Three steps
From a blank screen to a living legend.
Start
Open the game in your browser and choose your hero's origin.
Play
Make choices as the on-device AI weaves your unique narrative.
Forge
Create a new legend every run with procedurally generated worlds.
Simple pricing
Start your 7-day free trial, then pick a plan.
For casual adventurers
- Unlimited offline play
- Full on-device AI access
- 7-day free trial included
For legendary heroes
- Unlimited offline play
- Advanced world generation
- Custom character templates
- Priority support
- 7-day free trial included
Frequently asked
How does the on-device AI work?
Mythforge runs entirely in your browser. The AI Dungeon Master generates worlds, quests, and characters locally on your device — no internet required after loading, and your data never leaves your device.
Do you offer a free trial?
Yes — start with a 7-day free trial. After that, Mythforge is a paid-only subscription starting at $5/mo, ensuring high-quality, private on-device performance for every run.
Is my game data private?
Absolutely. Since the AI runs locally on your hardware, your story choices, character details, and world states are never uploaded to our servers. Your legend stays yours.
How do I pay, and can I cancel?
By card through our checkout. Plans are billed monthly and you can cancel at any time. Your access continues until the end of your billing cycle.
Forge your legend, privately.
Play in your browser, offline. Pick a plan and start your first adventure in seconds.
See plans