All the above is possible thanks to X11, also known as the X Window System.

CNN: Opinion: Linux doesn't do Windows -- and neither should you

What's more, the game only plays in 800-by-600 pixel mode in the X Window System.

CNN: Heroes of Might and Magic III triumphs on Linux

Like most of Loki's other ported games (Railroad Tycoon being the notable exception), Heroes III can only be played on the console and not displayed over a network through the X Window System.

CNN: Heroes of Might and Magic III triumphs on Linux