I've been working hard to try to beat expert. Haven't yet. This game manages to innovate breakout clones into something without a binary "long boredom/short chaos" binary by making this a choice. I find the screen resolution irritating at 1080p (and that the game doesn't scale with flash projector window size). The ice powerup is a notable exception to the balance in playstyle variety - the "blocks" being able to be destroyed by the balls makes it an option that is always leaking balls, as opposed to other high-level powerup stacks. Everything else is well balanced enough not to merit clear objection. More "non-consequential" powerup variety and approaches to retaining balls would be of interest. It's brutally difficult to complete, but it doesn't go all-in until Expert. I leave each session with the sense, "I could have done better." Obscurity is tragic when it's an advancement to the genre.