maintaining a virtual environment in memory, the virtual environment comprising a player-controlled game object and a second game object, the player-controlled game object being associated with a scope window, wherein the second game object is an aim of the player-controlled game object within the scope window;

determining a type of the second game object;

determining a type of condition pertaining to the determined type of the second game object; and

determining if the condition of the determined type associated with the second game object is met and, if so, obtaining preview information indicative of an interactive gameplay effect that would be carried out in the event of receipt of activation input via a game control interface and displaying the preview information in the scope window displayed on a screen, wherein the preview information is indicative of information associated with the type of the second game object, wherein the second game object comprises an NPC and wherein the interactive gameplay effect includes causing the NPC to be hidden by a concealment object if the NPC is within a threshold distance of the concealment object in the virtual environment, and not to be hidden otherwise.