Inside 1987, the sequel Beyond Dark Castle was released, where Duncan has to link to & kill a Black Knight world health organization is however alive. To access a Black Knight's tower, a streaming video player must number 1 gather 5 magic orbs which are then set inside various arduous to email site. Beyond Dark Castle experienced an engine similar to Dark Castle however by using improvements & additions, including the select few levels in which a streaming video player can control a "mediaeval jetpack" of sorts. Swimming a game on the "Advanced" difficulty level allows a streaming video player to view a long ending cinematic which reveals that a hero Bryant actually puts on the discomfited Black Knight's helmet & armor, becoming a freshly evil ruler himself.

Inside 1994, the gambling company Delta Tao Software acquired the rights to a select few of Silicon Beach's old games, via Aldus, & were suspire to create and publish the modernised colour version of the original game. Within 2000, a fresh sequel known as Go to to Dark Castle was announced, in which a fresh immature hero known as Bryant must once more kill the Black Knight. These are however within development.

The version for the Sega Genesis was released by Electronic Gaming Arts (currently Electronic Arts) in 1991. These are considered when one of a worst games for that console.