Nice concept. I enjoyed the atmosphere overall. But it felt like there's very little strategy in my actions. The movement of the ball are hard to predict (may be on purpose), so it's felt hard to stay inside the ring but not because of the skill. I think it might work better with gamepad maybe. Also I managed to pass up to level 3 and may be making glitches more frequent make it more interesting, because right now I was forced to just press left-right to stay in the circle and move in the same time for a while. I think that feedback like ball glowing red or something when bar is close to running out would make it more motivating to push further. And finally I'd add something to replenish bar a bit in later stages. I'll stop now ) It's a pretty good game for jam project :)