User Summary Sherlock Holmes and the Mystery of Osborne House places a heavy emphasis on puzzles, which the player solves using the stylus and touch screen. These largely take the form of minigames which include jigsaw puzzles, codes to decipher and paintings to examine. Each of these puzzles has its own difficulty settings and styles of gameplay. The game also features a help system which highlights important clues and guides the player in completing the puzzles. Solving the puzzle without the use of the help system awards the player with extra points and unlocks extras material and bonus puzzles.