algorithmic ambient board cards character-building classic competitive conducting cooperative cooptional cue-cards dance dice easy events few-players free-improv game guessing hard hidden-identity high-intermediate images in-genre insert inspire-cards instrument-preparation interpretation kids listening loop low-intermediate many-players minimal narrative no-props pen-and-paper quick random rhythmic role-play score simple solo sound-collage sound-design spatial speeding-up stub teams timed tonal voting words