Time Riddles: The Mansion is a hidden object game where most of the time, the objective is to find and click on all the items listed at the right side of the screen, on locations selected after throwing dice on a board game. The player assumes the role of the main character, playing a mysterious board game where objects have to be removed from scenes taking place on the mansion and its surroundings, to uncover its secret past. Each location has four optional awards, received after collecting all the six jewels, finding the list objects in order, avoiding wrong clicks and solving a riddle to find a special item.

The hint button is a green jewel set below the list, showing the position of one of the required objects when activated. There is a maximum of five hints available, with extra ones received after completing the tile-matching mini-game at the end of each chapter, where the player has to swap pairs of adjacent tiles to create lines or columns of three or more of the same type and make them disappear.