TwoPane Spectrum

This is a puzzle game centered around "colored glass light mixing." You need to observe the target pattern above and select red, green, blue, or transparent glass pieces from the tray, dragging or clicking to place them in a 6x6 grid. Each square can have a maximum of two pieces stacked. Colors are mixed additively: red + green = yellow, red + blue = purple, green + blue = cyan; same colors stacked remain unchanged, transparency does not change the color, and white squares must be left empty. Your task is to use a limited number of glass pieces to make the "ground light pattern" below perfectly match the target. The levels progress from easy to difficult, requiring precise planning of stacking order and color combinations in later stages. Built-in step-by-step hints make this game suitable for players of all ages who enjoy logical reasoning, color matching, and light challenges, especially for users looking to relax during short breaks and develop spatial reasoning and color intuition.