Play Prism Lab — Light and Mirrors Puzzle

Hints cost 10 coins

Prism Lab is a light puzzle on a small grid. Emitters shine coloured beams, and you place mirrors and splitters from a tray so that every target receives exactly its colour. Beams add up where they meet: red and blue make magenta, red and green make yellow. Later tiers add white light and colour filters. Use the fewest pieces for three stars. Sixty levels, plus a daily.