Guide colored light beams to matching targets using mirrors and filters! Tools: 1=backslash mirror, 2=forward slash mirror, 3=X beam splitter, 4=+ beam splitter, 5=red filter, 6=blue filter, 7=green filter. Click to place, right-click to remove. Press R to rotate selected mirror. Press H for hint. N/P to change chambers. Light all targets to solve each chamber!