The puzzles themselves were fun to solve, but I found the rest of the game to be frustrating enough that it took away from that fun. I felt like I was barely making enough to able to keep my tablet in reasonable shape, let alone trying to maintain the inks and food I needed. I was solving the puzzles perfectly, so was making what I assume was the most I could on each puzzle. The pop up ads were annoying, and are the kind that make me stop playing and uninstall a game because of how they get in the way. I think the ads would have been less annoying if they popped up after I hit send on a puzzle, instead of at random times, because it would have been less disruptive to my flow. It didn't help that when I clicked the "X" on an ad, it would move the square under it, which impacted my tablet's health and sometimes meant I had to do a few more moves to get things back to the way they were. I think the blinking as I got tired might have been okay, but by the time I was getting that I was frustrated enough that it was just another annoyance instead of an interesting game mechanic.
The grid puzzles were fun and I would have enjoyed spending more time solving them. But for me, everything else took away from the game instead of adding an additional layer of strategy to it.