Thanks for the concrete Chart 3 note. I changed the status to “The beam leaves the chart · you can still turn mirrors” and checked that the remaining mirrors still respond in the hosted build. The fix is live at https://nebulakit.itch.io/lightkeeper. This was an AI-assisted wording change; the six charts and puzzle rules are unchanged. — Omri / NebulaKit
October 8 update: the same six charts now have an optional 3D optical table. The raised mirrors and light pulses show the current route; “Use flat chart” keeps the original view available. Undo, hints and existing progress are preserved. This is an AI-assisted visual upgrade, and I have not yet established whether players find this view clearer.
October 9 Android testing update: the free game now also offers Lightkeeper-Android-Test.apk and its readme under Download Now (skip the optional donation). It is a compiled, debug-signed candidate, not a Google Play release. Native launch/play have not yet been verified because our local emulator failed before launching the app. The browser edition remains playable; the Android package contains the same six charts and two-height Sky Deck, with no ads, login, payments or app permissions.
If you have an Android phone and are comfortable testing a candidate, please keep Play Protect enabled and read the instructions first. Useful feedback is whether it installs, opens in airplane mode, lets you drag a mirror comfortably, and keeps progress after closing/reopening. Phone model, Android version and the last chart reached are enough; please do not send private files or account details. An honest problem report is more useful than a rating. We have not established independent mobile adoption or return play.