Patent US 9,687,729

A computer device has user interface configured to display user actuatable game elements and to detect user input when a user engages with a game element; and a processor configured to receive a detected user input and on detecting a match game condition to control the user interface to remove at least three game elements from the display and to provide on the user interface replacement user actuatable game elements, wherein the manner of providing each replacement game element has a graphical representation governed by a tile associated with each game element, wherein each tile has a selectable physics which controls at least one of (i) the direction in which it moves to replenish a vacancy left by the removed user game elements; and (ii) the speed at which it moves to replenish the vacancy.