I stopped after passing Run 70. But it did get boring already before that. I was just slightly curious about upgrades, and made my paddle more than whole screen wide, had several one time shields, making it impossible to die anymore. Was also checking if those blocks would eventually disappear, but they stopped shrinking at some point.
Start was fun, but game needs to tighten faster.
I would say around 9 second place I realised how game was actually getting easier instead of harder, since there werent enough time for blocks to drop anymore, as it takes anyway maybe first 3 seconds at least, before they reach you, hence you actually needed to survive only 6 seconds, then 5, 4, 3..2 seconds, and with slowdown they wouldnt even get to hit you at 5 second spot anymore.
Edit: forgot to mention. It bit confused me why there was this wider paddle option? I can see that perhaps idea is in making coins easier to catch, but at same time it, more importantly, makes it harder to avoid hitting blocks. I felt it was bit confusing as an upgrade, being rather the opposite.