That just means it is all done up, and only needs translation to playable game mechanics. Don't know enough about the folk-lore to know what system would suit it. Could be d20 for all I know, but it doesn't pay to make assumptions.
Running: Ruceeglaelsktinag ICOOCMap
My Dream Campaign: ICOOC No Map Right Now.
For everything else (including my extensive homebrew) see: Extended Signature My Homebrew is meant to be used, but, if you do, PLEASE tell me how it goes.