The games employ an integrated structure of adventure-style exploration, dialogue sequences, and regular story-prompted puzzle solving. The player (as Professor Layton, Luke, and other characters) explores their environment in the manner of a point-and-click adventure game, using the touch screen to talk with non-player characters, learn more about the environment, or locate hidden secrets such as "hint coins" that may be used during puzzles. Often, when interacting with a person or object, the player will be presented with a puzzle, valued at a certain number of "picarats", a type of point system within the game. Solving the puzzle correctly will earn the player that many picarats, but a wrong answer will reduce the value a small amount on subsequent attempts down to a minimal picarat number. In order to progress the plot, the player is required to solve specific puzzles, or to solve a minimum number of puzzles. If the player permanently leaves an area or otherwise significantly progresses the plot, puzzles they have yet to find and/or solve are regularly compiled and placed into a collection, often in the form of a "Puzzle Shack" owned by a character known as "Granny Riddleton", or with the aforementioned Riddleton's cat, "Keats", which they can return to and attempt to resolve later. Curious Village contains a total of 135 regular puzzles, while Diabolical Box contains 153, Unwound Future 168 (the latter two having another special puzzle obtained via the use of codes found in the previous game), Last Specter 170, Miracle Mask 150, Azran Legacy 165, and Mystery Journey 185.