Slay the Spire Board Game Act & Boss Rules
The game’s progression is organized into acts, with a boss at the end of each major climb.
Act map
Players move through connected encounter nodes, choosing routes that can include combats, elites, events, shops and rest opportunities.
Boss encounter
The boss uses its own intent deck/patterns and must be defeated under the normal combat rules.
Health and resources persist
Damage, deck state and certain resources carry between encounters unless a rest or effect changes them.
Boss rewards
Defeating a boss provides the act’s major reward package and unlocks the next stage of progression.
Continue or save
After an act, use the game’s save/continue structure to stop the session or proceed to a later act.
Victory
The session’s victory condition depends on the selected act/campaign objective; defeating the required final boss completes that run.