“So you want to be a pirate, eh? You look more like an insurance agent to me.”
Pirates (mutany on a ship), CGA-style 3D graphics (with dithering patterns you can spot from 2 yards away), puzzles, …
This one has all the ingredients for an interesting game.
https://www.gog.com/game/return_of_the_obra_dinn
(Edit: mentioned also in this topic by @LowLevel last year:
Under development adventure games that are worth a mention)