Download of Citadel Arcanes 2.0 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The software lies within Games, more precisely Adventure. We recommend checking the downloaded files with any free antivirus. This software for Mac OS X was originally produced by Krystal Bytes.
From the developer:
Citadel Arcanes is an adventure match3 game for Mac. The main objective of the game is to mix, connect, and construct your own Citadel. As the Duke’s daughter, you are learning the Arcanes of Magic and working on becoming the greatest architect in the kingdom.
You may want to check out more Mac applications, such as Echoes of the Past - The Citadels of Time, Dark Arcana: The Carnival or Elder Sign: Omens, which might be related to Citadel Arcanes.