Cathode Rays is a zero-button puzzle game that involves directing a set of coloured rays from one prism to another. While moving the rays you must avoid letting beams of different colours touch each other, else you'll be forced to play the same puzzle all over again until you get it right.

The game was made by Christoffer Hedborg (who also created the IGF Student Showcase winning entry Toys) for the Lunarcade Factory event held in Milan, Italy just two days ago, although participants actually had a two week period before that to design and submit something for the friendly game development meet. Cathode Rays also features music by Mattias Häggström Gerdt (otherwise known as anosou, composer for Cobalt), and you can either play it now at Kongregate or download a Windows or Mac build from Christoffer's site,