Plurality Spring (2017), for indeterminate instrumentation, is a standalone digital game and a framework for musical improvisation by Simon Hutchinson and Paul Turowski.
Players perform music to control robotic avatars exploring an unknown orb in deep space. The live acoustic player/performers control the movement of the robots via pitch and amplitude tracking, and the live acoustic audio mixes with in-game sound, creating an emergent augmented reality musical performance. Randomized levels, real-time decisions, and reactive audio lead to distinct musical results with each playthrough.
You can download the game at: https://simonhutchinson.itch.io/plurality-spring