Ahah, this is my kind of game. Loved it! The ambiance, be it the soundtrack or the graphics, even if absolutely minimalist really nailed it.
I took a while to understand how the elevator work, and I got stumped for a while until I discovered the currency after some exploration. Anyway I completed the game!
Though I don't get the link to the jam theme, I think it's probably the look of one of the areas, though I won't say more to not spoil it.