Rules edition: This campaign guide uses the 2014 D&D 5e Dungeon Master’s Guide and Basic Rules. The DMG’s “Creating a Multiverse” chapter gives one cosmology framework; your setting may use a different one.
A multiverse campaign gives the party room to travel beyond one world, but every new plane asks the group to learn new people, places, and stakes. Planar travel works best when it changes the story in a way your players can understand. Choose a clear reason to leave home, decide how characters can travel, and make each destination matter to the campaign.
Choose the cosmology your campaign uses
The 2014 Basic Rules and Dungeon Master’s Guide describe a multiverse with the Material Plane, transitive planes, Inner Planes, and Outer Planes. The DMG provides further details about planar travel and individual planes. Treat this as the cosmology for those rules sources, not a mandatory map for every D&D setting. Published settings and adventures can arrange or describe the planes differently.
Before the first journey, tell players which setting books and cosmology your campaign follows. If you adapt a plane, record the change so the group can distinguish a house rule from published rules. For a separate overview of the 2014 planes, see our 2014 planes of existence guide.
Give planar travel a story purpose
Decide why this campaign needs more than one plane. The party might follow a threat that crossed a planar boundary, seek an ally or object that cannot be found at home, or become involved in a conflict whose consequences reach several worlds. Tie each journey to a character goal or ongoing problem so that visiting a new plane is part of the adventure rather than a change of scenery.
Planar travel can happen through spells, portals, or other methods described in the source you use. The 2014 Basic Rules discuss spells and portals as routes to other planes. The relevant spell or setting source determines how a particular method works. Avoid inventing a universal level threshold, permanent portal network, or travel cost unless your campaign adopts it as a house rule.
Make each destination distinctive
Start with a few details players can act on: what the place looks, sounds, or feels like; which locals have power there; and what choice or problem awaits the party. Add a mechanical effect only when the campaign’s source supports it or you have introduced it clearly as a house rule. The DMG describes planar traits, but no single environmental hazard or magic alteration automatically applies to every plane.
Prepare an arrival scene, a useful local contact, and one complication that follows from the plane’s established features. Give the characters room to ask questions and change plans. A plane should feel different through its people, customs, surroundings, and consequences—not only through a surprise saving throw.
Keep the campaign anchored
Write down what could change while the characters are away: allies’ plans, a rival’s progress, or a deadline the group has already established. Then tell players how those events advance. If you want time to pass differently between planes, make that possibility clear before it changes a character’s relationships or goals. Time effects depend on the setting and chosen source; they are not an automatic feature of every planar visit.
A home base, recurring contact, or continuing faction can help players follow a campaign that moves between planes. Keep brief notes on who the party met, what it promised, how each journey connects to the main conflict, and which rules or house decisions the group has already established.
Control scope and preparation
Plan a short arc in one or two destinations before outlining the whole cosmos. Introduce new planar details when the players can interact with them. A map, a few factions, and one clear travel route are enough to begin; add more when the campaign needs them. If a plane-specific rule matters, check the relevant DMG chapter or setting book and explain how it affects the characters before it becomes decisive.
After the first excursion, ask which parts felt exciting and which felt confusing. Use that feedback to set the pace of later journeys. A multiverse campaign can expand gradually as the party earns access, allies, and knowledge, while still keeping familiar relationships in view.
Official Rules Sources
- Dungeon Master’s Guide (2014), Chapter 2: Creating a Multiverse
- Basic Rules (2014), Appendix D: The Planes of Existence
- Dungeon Master’s Guide (2014) errata
A shared set of extra d10s can help when a group has several tables or recurring planar encounters, but clear notes and player-facing expectations will matter more to the campaign.
