The Runes of Zendos, sequel to The Oracle's Cave, is a game in which the merry principality of Dorcasia is conquered by the evil wizard of Zendos, and the player must rescue the twelve months that the wizard has trapped in a hidden hourglass.
Loosely based on the cult episode "The Trouble With Tribbles" from the original Star Trek series you are a tribbles farmer and have to guide a batch of your newly bred critters to safety.
The ZX Spectrum version has a bit different sound, the UI layout is the same as Amstrad CPC but displayed in color, as well as the icon highlight spins through different colors while hovering unlike Amstrad which only had a solid color.