As we develop the app, we are currently working on level design, deciding how to place puzzles in relation to the museum and which puzzle to start with.
In terms of the layout of the museum, which room should player start with and in what order should player unlock them? What kind of effects and gimmicks should use? In addition, the puzzles are mainly arranged in order of difficulty, and for puzzles with location restrictions, they are arranged in the order in which those locations are unlocked. There are many considerations to be made. In order to make the app enjoyable, it is also necessary to consider that the difficulty level in the first half is neither too difficult nor too easy.
Adjustments to the puzzle itself and changes to the layout of the museum will likely be necessary in the future.