New to Dungeons & Dragons or running a game online for the first time? Start here. No books, no downloads, no group required — everything you need is in your browser.
Dungeons & Dragons is a collaborative storytelling game played with dice. One player is the Dungeon Master (DM) — the storyteller who describes the world, plays the villains, and runs the rules. Everyone else plays a character: a wizard, a rogue, a paladin, anything you can imagine. When the outcome of an action is uncertain, you roll a 20-sided die (a d20), add a number based on your character, and try to beat a target the DM sets. That single mechanic powers almost the entire game.
Almost nothing. You need a group (3–6 people is typical), a way to talk (voice chat works fine), and a way to roll dice. With ZapGM, the dice, maps, character sheets, and rules reference are all built in — and the official D&D 5e rules (the SRD) are free to use, so you don’t have to buy any books to start.
The DM sets a Difficulty Class (DC) — a target number. Easy tasks are DC 10, hard ones DC 15, very hard DC 20. You roll a d20, add your relevant modifier, and if you meet or beat the DC, you succeed. Combat, sneaking, persuasion, lockpicking — almost everything is a flavor of the d20 check.
A typical D&D session moves between three modes: Exploration (you travel and investigate, conversational pace), Social (you talk to characters and roleplay), and Combat (everyone rolls Initiative, takes turns, moves and attacks). ZapGM tracks initiative, turns, and the battle map automatically when combat starts.
Stuck on a rule? Zap is a free AI rules tutor on this page that uses the official D&D 5e ruleset. Ask anything: how to roll an attack, how a spell works, what your character can do on their turn. No sign-in required.
If you’re going to be the Dungeon Master, ZapGM’s AI does the heavy prep work — worlds and lore cards from a one-line story idea, AI-written campaign hooks and scenes, and per-NPC text-to-speech narration so your players hear the world.
ZapGM ships with a built-in creature library covering both Dungeons & Dragons 5e and Pathfinder 2e: 1,400+ monsters from the official open-licensed System Reference Documents. Full stat blocks, ready to drop into combat — no separate purchase, no manual entry.
Do I need books? No — the SRD is free and ZapGM uses it. How long is a session? 2–4 hours, typically weekly. Is it really free? Yes, free tier with no credit card. No group? Reddit r/lfg, StartPlaying.games, and D&D Discord servers all have hundreds of beginner-friendly games every week.