Lucerna

Ten buildings of twelve levels each, from the cottage to the square: the square grid, the hexagonal one with bridges, the isometric one (stacks of cubes the wire climbs and turns corners on) and a cube you turn with your finger, with cells on all six faces; at the end, all of them mixed and large. Along the way, white bulbs that need both lights, pieces that flip, gears, axles that turn on their own and a chapter in the dark. Every day, today’s light, and a free notebook with any size and seed.

Levels come from a seeded generator and are chosen from two hundred candidates each, by how far they can be deduced without guessing and whether their solution is unique. Beside the board, the building’s model, made by script in Blender and drawn with three.js on WebGPU, lights each bulb of the circuit live. Sound and music are synthesised in the browser.