Doodle Creatures

The best game in the series that you don't have to pay for. Obviously there's cash grab elements but not necessary. Much easier and simpler with a guide. Recommended anyway since unlike God/Devil, you waste valuable resources guessing otherwise. Takes a few hours to beat the whole game and its 3 puzzles this way. Only major problem is the scans glitch out if you close the app too often. Just reload, which takes like 2 seconds, and the scans complete as normal.