Glintmoor

Glintmoor is a laser-and-mirror puzzle on a night moor. Emitters send red, green, blue or white beams; place mirrors, half-silvered splitters, colour filters and mixers from a limited tray so every receptor receives exactly its own colour. Receptors only accept light through their socket, so magenta, yellow, cyan and white have to be mixed or filtered on the way. Stone blocks and fixed mirrors get in the way. 22 hand-made levels, each checked by replaying a stored solution, with stars for using no more pieces than par. It plays in the browser with a keyboard, mouse or touch.