A computer device providing a computer implemented game, said computer device comprising: a user interface configured to detect user input from a player of said game; at least one processor; and a display, said at least one processor being configured to: cause a game area to be displayed on said display, said game area comprising a plurality of third game objects; cause at least one second game object to move along a trajectory, wherein when said second game object hits one or more of said third game objects, said respective third game object is removed; and cause an angle of a trajectory of said second game object to be altered to cause said second game object to hit one or more third game objects.