Read how far light travels through a hex grid and reason out which cells are solid and which are clear.
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How to play
Edge beams report how far light shines through clear cells before a solid one stops it, and number clues tell you how many solid neighbours a cell has. Combine the readings to mark every hexagon correctly, with no guessing required.
Beam clues show the light's travel distance through clear hexes
Number clues count a cell's solid neighbours
Mark each hex as solid or clear
Solve the whole grid by deduction to win
Controls
Desktop: left-click a hex to cycle its state, right-click to cycle back
Phone & tablet: tap a hex to cycle through unknown, solid and clear
Game modes
Daily: one shared puzzle seeded by date
Practice: solve as many as you like
Board sizes: Small, Medium and Large
Tips & strategy
Start where a beam reading and a number clue overlap to lock in a certain cell
A beam that stops short tells you exactly where the first solid hex sits
Mark confirmed clear cells too, since they constrain the neighbouring counts
About Lumen Hex
Lumen Hex is an original free browser logic puzzle in the light-tracing deduction tradition, played on a honeycomb grid. Play instantly with no sign-up.
A free, original browser game on PlayPendium. No download, no install.
