Glowing insects called Crystalwings need help. They live in a nebula (a big cloud of space gas). Each cracked wing holds a shape mystery — area and surface area you can solve. Stories stay clear at every level. Collect every Cipher Shard to reveal the First Pattern: why their light obeys one careful design.
Redeem a classroom or family code to unlock all 30 mysteries on this device.
This mystery is part of the full Crystalwing constellation (30 missions). The free demo pack keeps a short, complete loop.
Paid classroom / family unlocks are in progress. For now you can redeem a license code in Settings, or open the full free app when hosted as edition full.
Full free app (this site by default): Progress stays in your browser (localStorage). Optional class leaderboard uses anonymous cosmic callsigns only — no real names or emails required.
Portal edition: No class leaderboard, no account, no ads, no tracking beacons. Progress is local to the device only.
COPPA-minded: Designed so under-13 play does not need personal information. Teachers should not enter student emails into this shell.
Full statement: see Crystalwing_Privacy_COPPA.md in the project docs.