- Accompanist (role)
- Ad libitum
- Agenda
- Aleatoricism
- Aspect
- Balance
- Bartle types
- BCG
- Conductor (role)
- Constellation
- Constructor (role)
- Co-optionality
- Cue cards
- Dice
- Dimension
- Downtime
- Emergence
- End Condition
- Event
- Extended technique
- Facilitator
- Fighting
- Found sound
- Genre
- Goals
- Horizon of intent
- Insert game
- Inspire cards
- Instrument Preparation
- Judge (role)
- Karaoke
- King-making
- Learning curve
- Ludomusical dissonance
- Mechanic
- Music game
- Non-idiomatic music
- Open work
- Parameter
- Pervasive Game
- Player (role)
- Prompter (role)
- Psychographics
- Quarterbacking
- Rhythm Cards
- Roles
- RPG
- Rule Cards
- Speedrun
- Stacking
- Trading
- Transition
- Upgrade
- Victory condition
- Xenochrony
- XP
- Yes And
Participant that plays music during the game but doesn’t have to follow the rules.
End Condition — A rule by which the game ends.
Non-idiomatic music — The genre of "no genre", also known as free music.
Accompanists add musical content (rhythm, harmony, color etc.) but are obliged only by the minimal subset of the game rules (usually they need to follow the end condition). Accompanists might play pre-set patterns or play non-idiomatic music but they usually are constrained only by general musical directions specified in rules or agreed upon before a performance.
In an open, game meeting setting, if the Accompanist is required by the game, the role is usually filled by one of the more experienced musicians who can play by ear to Players who play by rules.
Accompanists may be considered musical equivalents of „passengers” from improvisational theatre.
