Oh, I didn't notice the music bug. Good catch.
Yep, creating the base of the game, the maze-system took a lot more time than I expected. So I wasn't able to add the majority of the content that would make this game a little more than a barebones maze-game.
I had time for only one type of hostile, neutral, and friendly NPC and one kind of sub-maze. A surface-world with forests and villages, and dungeons with traps and locked gates with keys and levers, these were all part of my initial plans. My original inspiration was Hexen: Beyond Heretic with its hub-worlds. Well, as always, I chose a concept that is too big for a week-long jam, but at least I used a week-off from my main project to try this long-cherished idea.
Thank you for trying it out and commenting!