You've gone with your boat in search for treasures from the ancient city of Atlantis.
This is an earlier version of the same game for the C64.
One of the authors, Teri Li wrote the even earlier version published as a type-in program in The Captain 80 Book of BASIC Adventures and also wrote the C64 version.
It is likely that Mark Robinson implemented the graphics for this edition - yes, this is one bizarre case where the TRS-80 version has graphics and the C64 version does not.
The published solution for the C64 doesn't quite work for this version, as a few details have changed, but the two games are very similar.
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