Atelier Online (アトリエ オンライン ～ブレセイルの錬金術士～) is a smartphone and PC online role playing game that is currently in development.  It is subtitles as Alchemist(s) of Bureseiru. The official romanisation of Bureseiru is not currently known. The game is set to be released in Winter, 2017.
It is set to be released as a free to play title with purchasable premium items. It's being developed by Gust/Koei Tecmo, NHN PlayArts and Now Production. ACE is credited as the composers, and it's unknown if Gust's regular sound team will also be contributing.
Atelier Online combines the usual features of the Atelier series with online play and co-operation with other players. One can also play alone and is free to customize their outfit, skills and equipment. Fields change appearance, monsters and gatherable materials with the season and weather.