Crystal Clear

Run your own K9 optical glass workshop. Batch quartz sand and potash with precision, track the furnace temperature curve in real time, dose clarifier at the perfect moment, anneal away stress, cut and polish each blank, then pass optical inspection. Every batch fulfills a rotating optics order: telescope objectives, laser windows and prism blanks, each with its own grade and payout. Coins are settled by transmittance multiplied by bubble grade. Six real upgrades await in the Depot: a precision batch scale, a platinum crucible, an inline bubble detector with a live quality curve, a precision annealer, a fast cooling unit, and a long term optics contract. All upgrades take effect immediately and are saved permanently. Pure skill play, smooth synthesized sound, zero ads, zero waiting. How clear can your crystal get?