Spot the difference
Original image on left, click on the opposite image to identify differences. No time limit.
(Please note that this resource is available in swf, pdf & html formats).
Note: Ensure once downloads are unzipped that you keep ALL files in its folder; run one of the formats above from inside the folder. For html format pls run Index file or drag into URL bar. Seems to work best in Firefox, IE, Microsoft Edge or Safari.