Dagon - The Little Glass Bottle

I am John Jones who writes this letter my ship is fast sinking with a treasure on board I am where it is marked * on the enclosed chart.

Join Captain William Jones and his party of men on a treasure hunt adventure! The Little Glass Bottle is the second official DLC for Dagon, based on the first surviving story by the master of weird fiction, written when he was… 7 years old!

[From GOG]