Phase structure
Split an experience into phases only when the transition changes mechanics, combines skills, advances meaning, or creates a useful mental break. A phase should not exist merely to extend duration.
A check from Boss Up
This lens connects to one of the talk’s practical rules.
Change phase with purpose
Transition for a mechanical change, skill combination, story beat, or mental break—not just more duration.
Mechanics that use this lens
Fight phase
A health.
Structure and readabilityEnrage
The boss enters a more demanding state after a threshold or time limit.
Structure and readabilitySurvival phase
A survival phase advances when players endure a bounded sequence, timer, or objective rather than reducing boss health.
Space, movement, and perceptionNested / relocated arena
A relocated arena transfers the active boss fight into another playable space without ending or silently rebuilding the encounter.
Encounter goals and vulnerabilityPersistent encounter progress
Completed encounter objectives survive player defeat, so a new attempt resumes from an explicit authored milestone instead of rebuilding the whole fight.
States, resources, and scalingMoveset shapeshifting
The boss changes between complete borrowed movesets, each with its own signals, attacks, movement rules, and recovery.
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