1. A capture execution/non-execution control device comprising: a display controller configured to carry out control to cause a plurality of images generated through execution of a program to be displayed on a display unit; a capture level value acquirer configured to acquire respective capture level values from the program indicating respective degrees of permission or prohibition of capturing the respective ones of the images, wherein the capture level values are numeric magnitudes that are set by a programmer of the program and vary for respective ones of the images between one numerical extreme indicating a high permission to capture a given one of the plurality of images and another numerical extreme indicating a prohibition to capture a given one of the plurality of images, and wherein the respective capture level values are set to be associated with the respective ones of the images and vary in accordance with the respective ones of the images independently of: (i) any attribute or action of a user of the program, and (ii) any event within the program resulting from an action of the user; a reference value acquirer configured to acquire a reference value from the program serving as a criterion as to whether or not capture of an image is permitted, wherein the reference value is a numerical magnitude set based on at least one attribute of the user; and a capture execution/non-execution controller configured to control respective decisions as to whether or not to execute capture of the respective images displayed on the display unit according to respective results of comparison between the respective numeric magnitudes of the capture level values acquired and the numeric value of the reference value acquired.