Session zero checklist: set the table before dice roll

The most useful session in a long-running campaign is not the one with the critical hit or the dramatic reveal. It is the one where nobody rolls a die — session zero. Every group that skips it eventually discovers why it matters, usually in the form of a slow mismatch that could have been caught in an hour of honest conversation before the story began.

Session zero is where you agree on the game you are all here to play. Tone, boundaries, logistics, expectations — the invisible frame that holds the whole campaign upright. Here is a checklist to work through, calmly, together.

1. Tone and genre

Start with the big picture: what kind of story are you telling? Grim survival horror and swashbuckling heroics use the same rulebook but produce completely different sessions. Agree on a few descriptors: "pulpy adventure with real consequences," "political intrigue in a dying empire," "monster-of-the-week with found-family energy." The words matter. They give everyone a reference point for what fits and what does not.

Also cover the tonal gray areas. Are character deaths permanent? How much comedy is welcome — is this a table where someone can name their character after a pun, or is the tone more serious? Is romance between characters on the table? Player-vs-player conflict? None of these have wrong answers, but they have mismatched expectations, and those expectations will surface eventually. Better to surface them now.

2. Content boundaries and safety tools

This is the section some groups skip because it feels awkward, and it is the section that matters most. Every player has content they do not want in their recreational time — topics that are stressful, triggering, or simply not fun. Naming those boundaries before the campaign starts is an act of care that makes the game safer for everyone.

Two practical tools:

Lines and veils. Lines are hard boundaries — topics that do not appear in the game at all, ever. Veils are softer — topics that can exist in the world but happen off-screen, described briefly or implied rather than acted out in detail. Ask each player privately before the session what their lines and veils are, then share the aggregated list (without names) with the group.

The X card. A simple tool: any player can tap a card, raise a hand, or send a message at any time during play to indicate that the current content needs to stop, no questions asked. The GM moves past the moment immediately. The X card works because it requires no justification and no courage to explain — it is a fast, low-friction signal that keeps everyone safe in real time.

Other safety tools exist — Script Change, Lines and Veils, the Open Door — and they all serve the same purpose. Pick one, explain it, and mean it.

3. Character creation coordination

Do not build characters in isolation. The most fun parties come from building together, in conversation, so that backstories bump into each other and party roles complement rather than compete.

Two things to cover during character creation:

Party connections. Ask each player to define one connection to at least one other character. A shared history, a debt owed, a mutual acquaintance, a rival turned ally. These threads give the party a reason to exist beyond "we all met in a tavern" and give you, the GM, story hooks you did not have to invent.

Party role and niche. Make sure each character has a distinct mechanical and narrative role. Two characters with the same class can work if their personalities and backgrounds are different enough, but overlapping niches without coordination can leave someone feeling redundant. Talk through it.

4. House rules — declare them upfront

Every GM has house rules, and the worst time to discover them is mid-session when a player makes a move that violates one they did not know existed. Write your house rules down — a handful of bullet points — and walk through them in session zero.

Common house rules to cover: how you handle critical successes and failures, any banned or modified spells or abilities, your approach to rules disputes at the table (do you pause to look things up, or rule on the spot and check later?), and any homebrew systems you are using.

5. Availability and scheduling

The most common cause of campaign death is not boredom or burnout. It is scheduling. Agree on a regular cadence — weekly, biweekly, monthly — and a default day and time. Decide as a group what the quorum is: how many players need to be present for the session to run? What is the cancellation policy — how much notice is expected?

Also decide how you handle a player who misses a session. Does their character fade into the background? Does someone else run them? These logistics are not glamorous but they are the scaffolding that keeps a campaign standing.

6. The one sentence to end on

Before you close session zero, ask one question: "Is there anything you want from this campaign that we have not talked about?" Give everyone a moment. Sometimes the quietest player has been waiting for exactly this opening.

End session zero with clarity, not ambiguity. Everyone should leave knowing what game they are playing, who they are playing it with, and that their boundaries will be respected. That is the foundation everything else builds on.

Keep reading

• Start a campaign organized
• What to prep, what to improvise