This looks like a daily game, which is not what I’m after at the moment. I wanted to list games that put the user in control as much as possible. I would add it if the user could go through different challenges at their own pace. Still, this is looks like a really fun game; nicely done!
I'm considering adding an "unlimited" bank of puzzles that you can play once you've solved the daily games (or instead of the dailies). I'll let you know if I do!