Yep, I sure did make fun of my friends for playing what looked like such a simple experience, all about numbers going up and up, and then poured dozens of hours into it myself once I gave it a try.

It's not easy to make something this simple, on its face, this compelling, but the rhythms are satisfying without being mindless. Having beaten it repeatedly now, I have my patterns, and am loathe to vary them, but I know mine are by no means the best, nor what my friends use, which shows the craft of the developer at work.