Cylu was an action adventure game released in 1985 by Firebird for the ZX Spectrum, Commodore 64 and Amstrad CPC computer systems. It was programmed by Geoff Foley.
In the game, you take on the role of, Cylu, a warrior king in the land of Evol, who is trying to prove himself worthy to be the new leader. To do so, he must find 24 objects hidden within an isometric maze and return them to the Master Computer. Along the way there are 32 force-fields which block access to certain areas of the maze, and are only de-activated when the correct items are brought to the Master Computer.