The Atelier series is a franchise of RPG games developed by Gust. Over 20 main games have been released and a number of spinoffs. The main theme in all games is Alchemy, where you have to wander the world to gather resources to craft in to items, medicine, armor, etc. If you would like to start playing this series, but are unsure where to start, see this guide or this guide. As for the status of dual audio in the series, most games have both an English & Japanese voice track, however sadly for those who prefer English voices the newer games no longer have an English dub.