Took a few hours to play the game, spread over ~24 hours. Was able to reach the end, and score 30 Septendecillion [1]; I chose not to start over. At times it felt like there was no end to this game, and the only reason I kept playing was because of the level of engagement built into the game. The player has to figure out the game mechanics at each level, and every level introduces some novelty.
This is the first game in many years, in over a decade perhaps, that I was glued to for hours, and kept coming back to play. This left 2048, my favorite pastime until now, far behind in terms of engagement.
I did not read the blog post because it warned of spoilers, so at different stages it took me a while to optimize the numbers to make progress.
Loved the game, and will play it again when I have a few hours to spare. Hopefully will be better at it the next time.
[1]: Paperclips: 30,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000