Oh no! I hope the silence isn't a common issue, I'll be looking into that. Did you play on simulator or hardware? It's possible that I didn't raise the volume of the gameplay track as high as it needed to go. I realized that I was only testing with full volume on hardware because it was pretty bass heavy.
I'm so glad you enjoyed it and I'd love to add more variety to the game! This was my first Playdate game, and I massively underestimated the difficulty of the graph and accelerometer mechanics at the beginning of the jam. I had to compromise quite a bit, so I'm glad that it was still enjoyable, even if it was very basic.