The light table

Past red there’s only heat. Draw light into the dark: press and drag across the grid to lay down a line of pegs, in any of 21 layers along three axes. Every peg hums its own frequency.

Press and drag on the grid to draw · start on a lit peg to erase · Arrows move · Enter or Space places / removes · 1–9 color · X Y Z slice · [ ] layer · drag the cube to orbit, scroll or pinch to zoom