Timeline
A horizontal canvas of events grouped by layer, with era bands across the top.
Timelines
A timeline in PostRoll is more than a list of dates. It’s a living continuity system for your world — every battle, treaty, prophecy, clue, and session maps onto one canonical axis, and a single workspace gives you eight ways to look at it.
You can write a year-precise event for King Aldren signs the Treaty of Three Crowns in the same timeline as a fuzzy Something terrible happened during the Sundering Age, a session-anchored The party arrived at Vael, and a floating When the players reach the Hollow Saint. Each one renders correctly in the right view; everything sorts and filters together.
Timelines are entirely opt-in — you can record one event in the
implicit Gregorian calendar and never touch the calendar / cycles /
mystery features. They scale up as your world does.
Where to find them
Section titled “Where to find them”Open any world and click Timeline in the world navigation. The
URL is /app/worlds/<your world>/timeline. From there, the
Settings tab lets you build calendars and cycles, and the
Export dropdown lets you produce Markdown for hand-out or archive.
The Timeline tab on each entity’s detail page shows a per-entity slice of the same data — see Entity timelines.
The eight tabs
Section titled “The eight tabs”Calendar
A calendar-aware grid (custom weekdays + intercalary days supported).
Chronicle
A vertical readable view with a player-safe toggle.
Agenda
A three-column kanban for upcoming consequences and floating triggers.
Cycles
Today’s world state — moons, tides, seasons, festivals.
Mystery
Clue-board view — every clue clusters under its mystery.
Relationships
Cross-section two or more entities to see shared events.
Settings
Manage calendars, layers, cycles, and saved views.
Start here
Section titled “Start here”Your first eventA 3-minute walkthrough — open the workspace, add an event, see it appear.
The Timeline tabThe horizontal canvas with era bands and layer tracks.
Creating eventsThe quick-create dialog and its smart When parser.
Dating eventsTen precision modes — exact, year, era, session, floating, and more.
Authoring concepts
Section titled “Authoring concepts”Event fieldsTitle, type, layer, certainty, importance, summary, body, GM notes.
Visibility & revealGM-only events, player-safe summaries, the reveal-in-session workflow.
Linking eventsConnect events to entities, scenes, sessions, locations, even other events.
Cause & effectBuild chains of causes and consequences from inside the inspector.
LayersFive built-in tracks plus custom layers for your campaign.
Calendars & cycles
Section titled “Calendars & cycles”Calendars overviewWhen you need a calendar, when the implicit Gregorian fallback is enough.
Building a calendarMonths, weekdays, eras, intercalary days, leap rules — all in one settings doc.
Calendar cookbookRecipes — Gregorian, Harptos, Exandria, regnal, four-season, campaign-day.
World cyclesMoons, tides, seasons, festivals — with a phase ring and per-day calendar chips.
Sessions, exports, and embeds
Section titled “Sessions, exports, and embeds”Sessions and recapsWorld-anchored sessions with player and GM recap fields.
The reveal workflowMark hidden events as discovered in a specific session.
Wiki embedsDrop a timeline list, an entity's events, or a cycles dashboard onto any wiki page.
Markdown exportFull GM view or player-safe download for archiving and hand-outs.
Maps & time
Section titled “Maps & time”The world-map time sliderScrub a world map through history — features fade in and out with their linked events.
Appearing & disappearing featuresHow created / destroyed links decide when a pin, region, or path shows.
Time-aware basemapsSwap basemap art automatically as the slider crosses a year you set.
Region faction controlRe-tint a region as control passes between factions over time.
Paths that draw over timeReveal a route waypoint-by-waypoint as the slider advances.