You have to search for clues and puzzles far across a river/lake most of the game. So that makes for a lot of tapping to find tiny areas. Once you find them and need to come back when you find the solution, you’re back to tapping to find that tiny spot again. I think it was made that way so they didn’t have to create a lot of scenes.
If that’s a type of game you enjoy, definitely give it a try.