key bindings, in the shape Input.exportBindings writes and importBindings reads
game-defined values beyond the built-ins above (hints, violence, ...), keyed by name
background-music level, 0 to 1
master mute: both effective volumes read 0 while true, levels are kept
sound-effect level, 0 to 1
the zoom a game applies to its own Camera; never below 0.01, like Camera itself
the player-facing values
Settingspersists; everything is renderer-free on purpose