If you are accustomed to other puzzle games, you might find a few things missing 🙂: * No purchases, nothing to buy, ever. * No randomness, no "luck" needed, every puzzle has a solution. * No interrupting ads (but you can choose to watch an ad to get a hint). * No waiting for "lives" to refill. * No time limits or deadlines, unlimited undo, play at your own pace. * No running out of puzzles, go as deep as you want!