HELIOS — The Longest Day: building computation out of sunlight (opens in new tab)

This is a submission for the What I Built HELIOS — The Longest Day is a real-time light-routing logic puzzle. On the longest day of the year, sunlight is your only tool: you bend the sun's beam with mirrors, divide it with splitters, and channel it through optical logic gates to wake dormant crystals before the sun sets. The goal was to fuse the two themes into a single mechanic instead of bolting them together: 🌅 Solstice — light is the resource, the sun's arc across the sky is your timer, a...