- 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 affects only the outcome of the game.
Judge’s role might be visible at the very end of the game or at the end of distinct stages of the game. Judge might affect the production of music only by the way of stopping it. Alhough usually don’t produce sounds at all, in some arrangments Judge is a participant who makes one final (or almost final) cue or even a sounding note of the piece (i.e. gives a signal to end the game).
Judge might sometimes be considered a very specialised Conductor, but usually his/her actions are outside the flow of the performance. That allows for the unique feature of this role, which is the possibility of forming the collective body of Judges. The most popular way how the group of Judges may decide on the outcome of the game (or a stage of the game) is by voting.
