Imperial Chess 1.3 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. The actual developer of this free Mac application is victorcampeanu. The program lies within Games, more precisely Board.
From the developer:
Imperial Chess lets you play against 8 of the best chess engines, including Stockfish 15 , Leela Chess Zero and Maia. You discover a great interface for all platforms with custom boards and pieces, sounds and spoken moves. A variety of opening books for all levels can help you improve your game.
You can customize your opponent's playing style by adjusting various options like engine strength, move time and increment, opening books variations.
You may want to check out more Mac applications, such as Sigma Chess, Chinese Chess or War! Age of Imperialism, which might be related to Imperial Chess.