Build worlds. Generate scenes. Manage your journal.
Run sessions — offline-first, on any device.
About Us
L.E.O. is created by active tabletop players to support shared storytelling online, offline, and in hybrid sessions. We pledge to help connect all ages into immersive experiences that foster creativity, cooperation, and team play — with or without devices. Read our full pledge.
Four Pillars
Four deep, integrated modules. Each works standalone — together they form a complete campaign engine.
From seed to civilization — procedurally generated, fully editable worlds.
Gold-standard procedural scenes — from dungeon to mansion, in seconds.
Your entire campaign knowledge base — NPCs, items, events, all connected.
Mobile-first virtual tabletop. Switch from scene to live play instantly.
Official Integration
L.E.O. is officially integrated with Foundry VTT. Export any procedurally generated scene directly as .uvtt — walls, lighting, and metadata pre-configured. One tap from your phone, and your scene is in Foundry ready to run.
Built Different
No cloud dependency, no forced subscription, no GPU required.
All four modules work without internet. Your data lives on your device. No cloud, no lock-in, no data harvesting.
Low-impact rendering designed to not destroy battery life. Runs smoothly on mid-tier phones — no high-end GPU needed.
Every tap counts. Built for phone and tablet with the same experience on desktop — not a mobile afterthought.
One-tap DB snapshot to LeoVault. Switch between Windows, Android, and Web — your campaign travels with you.
Your worlds, maps, and sessions are never uploaded unless you explicitly choose to share them.
Smart seeded generation — reproducible, valid layouts every time. Zero junk results. Every map feels handcrafted.
Screenshots
Procedurally generated maps from the Scene Generator — part of the GM toolkit. Players join and view scenes in campaigns; creating these maps requires GM.
Tutorials
Intro videos for the GM workflow (World, Scene, Journal, local VTT). Anyone can watch on YouTube; using those tools in the app requires GM. GM + Live (online sync) is not covered here.
Install
Web beta is live now. Windows and Android are pending store approval.
Temporarily paused while Microsoft Store approval is pending. Unsigned version available for download
Open BetaSimple Pricing
The full offline toolkit is a one-time unlock. Pay only for online services that cost us infrastructure.
Join campaigns as a player
Full offline campaign toolkit
No subscription. No expiry. Yours forever.
Online play & advanced features
Requires GM license. Cancel anytime.
💡 Why is online a subscription? The offline GM toolkit is yours forever for a one-time €14.99. GM + Live adds €3.99/month (or €39.99/year at checkout) for servers, sync, and bandwidth — and requires an active GM license. Free Player accounts can join games and host one small campaign; upgrade to GM to remove caps and unlock all modules.
Purchases on Polar are subject to Polar's customer terms and to our Terms, Refund policy and Privacy policy.
Why L.E.O.?
| Feature | L.E.O. GM | L.E.O. Live | Generic VTT | Map app |
|---|---|---|---|---|
| Procedural world generation | ✓ | ✓ | — | Some |
| Procedural scene generation | ✓ | ✓ | — | Some |
| Journal / NPC database | ✓ | ✓ | Basic | — |
| Mind map + Infinite canvas | ✓ | ✓ | — | — |
| VTT (fog, tokens, lighting) | Local only | ✓ Online | ✓ | — |
| TV cast (Chromecast, local Wi‑Fi) | ✓ | ✓ | — | — |
| Advanced export (PNG / SVG) | ✓ | ✓ | — | — |
| PSD, UVTT & Foundry cloud push | — | ✓ | — | — |
| Unlimited campaigns & worlds (DM) | ✓ | ✓ | Varies | — |
| Works fully offline | ✓ | Partial | — | Partial |
| Android & mobile native | ✓ | ✓ | Desktop only | Some |
| PDF reader built-in | ✓ | ✓ | — | — |
| LeoVault backup | ✓ | ✓ | — | — |
| Pricing | €14.99 once | +€3.99/mo or €39.99/yr | €40+ or sub | Varies |
Player (free): join campaigns, host 1 campaign with 1 world and up to 10 stored scenes — GM unlock removes these caps and adds all modules above.