Thanks for playing my game and leaving a comment.
Thanks for the kind words for my sprite work. I think it helped that the shapes I was working with were extremely simple cuboids and cylinders, which made it easier figure out shading, positioning, and drawing the correct perspective. I was using a free browser based tool called Piskel.
I had trouble with the graphic design side of things, so I decided to omit a few mechanics: This would have been creatures stealing coins from the hole, and a coin throw mechanic that would have sacrificed the most recently collected coin to repel the creature by chucking money at it.
The main game still functioned well without these additional mechanics, but, as you have observed, the gameplay is left very basic.