I am so very happy you enjoyed the game so much! Ye. I wanted to make more music for the game but I ran out of time :(
It is my own rope simulation script. I used distance joint to check where the anchor is against the neighboring anchor. And then apply forces : player Input * swingspeed and then I use a sin wave to get the shape of the rope and all the ropes joints forces depending how far it is from the player. The further it's away the less force is applied.
It's much easier if you look at it physically xD hope this answers your question.
Hard to explain.
Thank you so much for the feedback!