LumenGrid presents a hexagonal grid of glass cells lit by a single glowing source. Drag your finger from the source cell across the honeycomb grid and every cell your finger traces fills with warm coloured light like stained glass coming to life. Lift your finger and the path is committed — those cells stay illuminated. Blocked cells marked with a cross cannot be entered and you must route your light around them. Prism cells scatter the light in a beautiful starburst when illuminated. Your goal is to fill every non-blocked cell on the grid with light. If you make a mistake or want a different route tap the Reset button to clear all filled cells and start your path again from the source. The colour of the light changes with each level cycling through amber, sky blue, sage green, lavender, coral, teal, rose and mint. Fewer redraws to fill the complete grid earns a higher score.