Game Master

ABOUT THIS GAME

Game Master is a tabletop RPG campaign, map, and session app built for creating adventures, organizing campaigns, and running games with less bookkeeping.

Build maps. Create characters. Prepare monsters and encounters. Run live sessions. Let players join over your local network.

Game Master is designed around a simple idea:

Players make the decisions and roll the dice. Game Master handles the math and bookkeeping.

Whether you play entirely digitally or use physical dice, character sheets, and miniatures, Game Master is designed to support the table instead of getting in the way.

PLAY FOR FREE

The base version of Game Master is free and is designed so players can join and participate in games without needing to purchase the creation tools.

Players can:

Join supported LAN sessions

View the live game map

Control their character when permitted

Move, search, interact, and use items

Participate in combat

Roll digital dice or use physical dice

Receive story messages and discoveries

Review previous events in the Session Log

Use the built-in rules reference, How to Play guide, and glossary

FULL TOOLKIT DLC

Want to build and run your own campaigns?

The Game Master Full Toolkit DLC unlocks the GM and creation tools, including:

Map Maker

Campaign creation and editing

Character management

NPC creation

Monster creation

Encounter building

Items and rewards

GM live-session tools

Fog of war controls

Hidden information

Campaign customization

Additional authoring and management features

Additional expansion DLC may require the Full Toolkit.

BUILD YOUR OWN MAPS

The Map Maker gives GMs a layered editor for building playable tabletop maps.

Create forests, towns, caves, mines, ruins, dungeons, campsites, taverns, and more using:

Ground

Terrain

Decorations

Objects

Logic

Walls and doors

Furniture

Interactive objects

Traps

Creature placement

Environmental effects

Weather

Indoor and outdoor areas

Test maps before using them in a live campaign.

RUN LIVE SESSIONS

Start a session and run the adventure directly from the map.

The GM can manage:

Exploration

Encounters

Initiative

Turn order

Combat

Monsters and NPCs

Fog of war

Hidden information

Searchable objects

Story messages

Session state

Player visibility

GM-only notes

Rules overrides

The GM always remains in control.

AUTOMATED RULES AND BOOKKEEPING

Game Master can handle repetitive calculations while leaving gameplay decisions with the players.

Depending on the active ruleset, Game Master can manage:

Roll modifiers

Target numbers

Attack results

Damage

Healing

Hit Points

Conditions

Initiative

Turn order

Inventory

Currency

Encounter state

Traps

Visibility

Session progress

Players can still roll physical dice and enter the result, or initiate digital rolls inside the app.

LOCAL NETWORK MULTIPLAYER

Host a session on your local network and let players join from supported devices.

The GM host maintains the authoritative game state while connected players receive the information they are allowed to see.

Game Master supports systems such as:

Player-specific information

GM-only information

Hidden traps and secrets

Private discoveries

Session synchronization

Reconnection after temporary network interruptions

A dedicated internet server is not required for LAN play.

BUILT-IN GAME LIBRARY

Game Master includes a growing library of built-in fantasy content, including:

Creatures

Monsters

Weapons

Armor

Equipment

Consumables

Treasure

Encounter content

Built-in content is designed specifically for Game Master using original or clearly generic fantasy concepts.

GMs can also create their own custom content.

HOW TO PLAY AND RULES REFERENCE

New to tabletop RPGs?

Game Master includes a built-in How to Play guide and glossary explaining common terms and systems.

Look up terms such as:

AC

HP

CR

DC

Initiative

Saving Throws

Attack Rolls

Damage

Movement

Conditions

The full rules, How to Play guide, glossary, and built-in game library are also available through the Game Master website.

DIGITAL OR PHYSICAL TABLETOP PLAY

Game Master can support different styles of play.

Use:

Digital maps

Physical dice

Digital dice

Paper character sheets

Digital character sheets

Physical miniatures

Player devices

A GM-controlled computer

Use as much or as little automation as your group wants.

BUILT FOR GAME MASTERS

Game Master is designed to take care of the tedious parts of running a tabletop campaign so the GM can focus on the adventure.

Build Maps. Run Campaigns. Play Together.

Game Master is developed by Frozen Dungeon Studios.