There is music at all points during the game... did it not play for you? That probably had to do with the HTML5 audio system, which is finicky, it always wants to stop audio unless it's sure you have focus on the HTML5 app. What web browser are you using? Try again clicking on the game window again, or the Windows version if you can... It's the first time someone alluded that they couldn't hear the music. I made custom music for the intro, game, and outro haha!
And yeah, I wanted to have more fitting sound effects to realistic snow, ice, water sloshing, etc., but I needed to use no pre-made assets for this jam and I couldn't really make those sounds effectively even with more than 3 hours for the music/audio, so simple 8-bit SFX it was.
And the yellow line is dumb, it's just a vague little dotted road separation line haha! Just to give the background a bit more flavor, it's silly. The world tiles don't make a ton of sense obviously.
Thank you for playing!