Board Thread:Questions and Answers/@comment-65.49.68.195-20160526141436/@comment-25669516-20170723110736

It's in the top right corner of the screen (appears after a scripted conversation in Act II). Afaik it's not available on Windows. If you are on Android/iOS, have updated your game to the latest version, finished Act II but are still not getting Eclipse mode then your game might be bugged. Try contacting Nekki support.