Arberth Studios today announced the development of Rhiannon - Beyond the Mabinogion, a point-and-click adventure game based on the Four Branches legends, as told in the ancient Welsh cultural and mythical classic The Mabinogion. The legend describes the conflict between the prince Pryderi and the evil wizard Llwyd, who was forced to swear never to take revenge during Pryderi's lifetime, but made no such promise about what was to happen afterwards. Check the press release and the screenshots from our gallery.