Mystery of Mortlake Mansion is a hidden object game that was initially released in 2009. The player gets to choose between playing a female or male character. Players must help an old man escape Mortlake Mansion by looking for clues and objects on each level. As each level is passed, more of the story behind Mortlake Mansion unfolds. Each level begins with a hidden object game. Find and collect all the items on the list provided to move on to the next level. The game also has other mini games in the form of different types of puzzles. The main goal is to find all seven keys in order to escape Mortlake Mansion.
Players can choose the difficulty level that they want to play at the beginning of the game. In Easy mode, players will have the chance to use an in-game interactive map to move to and from different locations in the game. The recharging time for the hint amulet takes only 10 seconds. In High Difficulty mode, the player will not be able to use the interactive map and the hint amulet recharges after 30 seconds.
Other game options are available in the game including playing the game in full screen or in a window, sound volume, and music volume.