I'm glad you enjoyed the game, and thanks a lot for your feedback. I did, in fact, try to implement coyote time jump by essentially increasing the bounding box for checking if player is in ground, but that had the side-effect of introducing the wall jump capability, i.e. the player can just jump from the side of the platform without ever being ON the platform. Do you know of any links/resources on how to implement this properly in Unity?
The background music is by: https://freesound.org/people/frankum/, and this is the particular one: https://freesound.org/people/frankum/sounds/393520/. I just asked on Tim's discord, and someone suggested this to me.