Uses pumpuli's custom music routines that allows arpeggio among other things :)
The landscape is based on a seamless torus noise-generated heightmap, rendered with the "Comanche"-style voxel rendering, and a lot of tweaking and optimization to make it run nice.
Released at Assembly Online 2020 demoparty Pico-8 compo
Code & music - pumpuli
Code - visy
Graphics - ZanaGB
Feedback effect with a surprising 3d quality to it. Greetings to Llamasoft!