I'm curious about why exactly this is so anxiety-inducing. I have multiple hypotheses: a) the way the numbers only come together for a moment means you need to

I'm curious about why exactly this is so anxiety-inducing. I have multiple hypotheses: a) the way the numbers only come together for a moment means you need to concentrate. b) the feeling of objects being flung towards you. c) the color scheme. d) the frenetic, jittery movement of the blocks, kind of like insects. e) The large number of objects moving unpredictably makes it hard to track. f) The passage of time. g) Every 10 seconds, the digits get pounded and blocks fly at you. This is probably over-analysis, but it's interesting that so many people have the same reaction to this page.