The game was published by Telarium (formerly known as Trillium), a subsidiary of Spinnaker Software, in the year 1984.

[1] The player character is Practor Fime, an apprentice blacksmith.

The goal of the game is to rescue the wizard Nacomedon, who has been trapped in his castle, the eponymous Shadowkeep, by an evil Demon, Dal'brad.

At the beginning of the game you recruit 9 other characters, whose stats you can decide on, and then use these characters to navigate various rooms inside the castle in order to find and then release the wizard.

[3] Shadowkeep is a fantasy adventure novel by Alan Dean Foster published in 1984 by Warner Books.