Seems to have been published in the autumn of 1981 as it's mentioned in early Microtanic advertisements, such as that in Your Computer Magazine October 1981. The game is not mentioned in their advertisements in the previous issues.
Available for download in Games Pack 1 here.
Youtube walkthrough.
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Simple treasure quest, almost no puzzles, fitting in the obscure Microtan 65, an Oric precursor. An isolated rarity in the sense that it is an original game, not a port, for what was effectively a homebrew-like single board computer for enthusiasts.