A sun emitter fires a beam in one fixed direction. The arrow spoke shows which way.
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Mirrors bend
Tap any empty cell to drop a mirror. Each tap flips it: / → \ → remove. Mirrors turn the beam 90°. Fire as many times as you want — only your best run counts.
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Crystals + focus
Thread the beam through every cyan crystal and have it end at the gold focus. The focus ignites.
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Voids & stars
Purple voids absorb the beam — route around them. Reaching the focus is always a win. You get ★★★ for lighting every crystal with ≤ par mirrors, ★★ for one of those, ★ for just reaching the focus.
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Three modes
Daily feeds your streak. Challenge has a prism that splits the beam — two focus crystals to light. Weekly is a bigger 8×8 board with locked bronze mirrors you can't move.
All lit.
Day — · — mirrors · — try
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Next beam in —
settings
Preferences
unlocked
Weekly Challenge
One premium puzzle per week. Bigger 8×8 board, more locked bronze mirrors, no scaling —
a static monster that drops every Monday UTC. Doesn't feed your streak, just for the brain.