Best I could get was 150 before I rage quit. Lovely concept, super simple, effective and original. I would've changed a bit the RNG logic with the generated "bubbles". Some runs are super easy because you get a really good chain, and others are straight up impossible. A way to discard bubbles would also be cool and would add one more thing to look out for, which would increase the anxiety, which I feel is the intention :)
Great job!