Mae Wales Interactive wedi cymryd y stori wreiddiol o lên gwerin Cymru, wedi esblygu'r naratif gan ddefnyddio ffaith a ffuglen ac ychwanegu nifer o gymeriadau, gan ddod â'r gêm i gynulleidfaoedd newydd sy'n gallu ei phrofi trwy gyfrwng gêm arswyd person cyntaf.
Wales Interactive has taken the original story from Welsh folklore, evolved the narrative using fact and fiction and added numerous characters for effect, bringing the game to new audiences who can experience it in the medium of a first-person horror game.