Krull is an Atari 2600 video game based on the 1983 science fantasy film Krull and published in 1983 by Atari, Inc.
The game generally follows the plot of the movie, and takes place on four separate screens. The first level begins with the player, as Colwyn, at his wedding to Lyssa, which is interrupted by the extraterrestrial Slayers. The game continues to generate new Slayers for the player to fight until he is overwhelmed and Lyssa is abducted to the Black Fortress.
The player then traverses the Iron Desert on a Fire Mare, stocking up on Colwyn's magical throwing weapon, the Glaive (in the film there is only one), by pressing the button each time the horse rides over one.
The next level takes place in the lair of the Widow of the Web. The player is required to jump between moving threads of web, working their way upward towards the Widow at the top of the screen, while avoiding a giant spider. After completing this task, the Widow reveals the location of the Black Fortress, and the player again rides a Fire Mare through the Iron Desert to reach it. If the player fails to arrive at the given location at the correct time of day, according to a timer at the top of the screen, he loses a life and must return to the Widow to find out the Fortress's new location.