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Spot the difference, formerly known as Looking for mistakes, is a category of Image game in Dan-Ball. In this game, the player must find the difference between two images A and B. There are two different methods in which the images are displayed to the user, which are called "Change" and "Movie".

Change[]

Change s

Illustration of the change animation.

For "change" the game swaps between the two images with a small break in-between. Due the the small break where only a completely grey image is displayed, the human eye can not track the differences as easy as if the images would swap directly. In real world the brain tries to ignore the effect of a blink of the eyes[1], and according to our experience a real objects can not simply disappear during that time. Similar to the effect of blinking, this also happens with the grey screen break, which makes the difference hard to spot.

Selecting "answer" allows the user to switch directly from one image to the other with a mouse click, which helps to spot the error immediately. Before the HTML5 update, selecting "hint" makes the break between the images faster.

Movie[]

Movie s

Illustration of the movie animation.

For "Movie" the game is very slowly blending from one image to the other and back. An indicator at the lower left shows, how much of each of the two images is displayed: If the red spot is at the left or right side, image A or B are displayed directly. If the red spot is somewhere in-between, a corresponding mixture of the two images is displayed.

Selecting "answer" allows the user to switch directly from one image to the other with a mouse click, which helps to spot the error immediately. selecting "hint" makes the blending between the images faster.

List of images for "Looking for mistakes"[]

Icon Name Method Date Implemented
Movie Imperial Palaces Imperial Palaces Movie 24/06/2007
Change Cactus Cactus Change 05/05/2007
Movie Evening sun Evening sun Movie 22/04/2007
Change ISHIMIGINZAN3 ISHIMIGINZAN3 Change 01/04/2007
Movie ISHIMIGINZAN2 ISHIMIGINZAN2 Movie 18/03/2007
Movie ISHIMIGINZAN1 ISHIMIGINZAN1 Movie 11/03/2007
Change YARIGAKAKE YARIGAKAKE Change 23/02/2007
Movie Fur seal Fur seal Movie 12/02/2007
Change jellyfish jellyfish Change 04/02/2007
Movie Crab Crab Movie 28/01/2007
Change Sacred tree2 Sacred tree2 Change 21/01/2007
Movie Sacred tree1 Sacred tree1 Movie 14/01/2007
Movie Snow mountain2 Snow mountain2 Movie 08/01/2007
Change Lobster's tail Lobster's tail Change 01/01/2007
Movie Snow mountain1 Snow mountain1 Movie 24/12/2006
Movie Church Church Movie 17/12/2006
Change Giraffe Giraffe Change 10/12/2006
Movie HIRUZEN HIRUZEN Movie 03/12/2006
Change HORYUJI HORYUJI Change 26/11/2006
Change Penguin Penguin Change 19/11/2006
Movie Water tank Water tank Movie 11/11/2006
Change Lion Lion Change 05/11/2006
Movie San Francisco San Francisco Movie 29/10/2006
Change KAZURA Bridge3 KAZURA Bridge3 Change 22/10/2006
Change KAZURA Bridge2 KAZURA Bridge2 Change 15/10/2006
Movie KAZURA Bridge1 KAZURA Bridge1 Movie 09/10/2006
Change Building street2 Building street2 Change 01/10/2006
Change Building street1 Building street1 Change 22/09/2006
Movie Night view3 Night view3 Movie 18/09/2006
Movie Night view2 Night view2 Movie 10/09/2006
Change Night view1 Night view1 Change 03/09/2006
Change Stroll3 Stroll3 Change 27/08/2006
Movie Stroll2 Stroll2 Movie 20/08/2006
Change CHISHIMAGICYOU CHISHIMAGICYOU Change 13/08/2006
Movie TATESINA2 TATESINA2 Movie 06/08/2006
Change TATESINA1 TATESINA1 Change 29/07/2006
Change Airplane Airplane Change 23/07/2006
Movie NAKAYAMA NAKAYAMA Movie 16/07/2006
Change Golden Gate Golden Gate Change 09/07/2006
Movie Passage Passage Movie 02/07/2006
Change Wave Wave Change 25/06/2006
Movie Osaka castle Osaka castle Movie 18/06/2006
Change Grand Canyon Grand Canyon Change 11/06/2006
Movie Woods Woods Movie 04/06/2006
Movie Cable car Cable car Movie 28/05/2006
Change Hotel Hotel Change 24/05/2006
Movie Ascatoraz Ascatoraz Movie 15/05/2006
Change ENGYOZI ENGYOZI Change 07/05/2006
Change Coast Coast Change 16/04/2006
Movie Stroll1 Stroll1 Movie 16/04/2006

History[]

  • The first "Spot the difference" games were "Stroll1" and "Coast" and were added in 16 April, 2006. The last game was "Imperial Palaces" and was added in 24 June, 2007.
  • The "answer" function was implemented in 25 June, 2006, while the "hint" function was implemented in 28 January, 2007.
  • The "hint" function was removed during the update of the games from Flash to HTML5 in 2 April, 2022.

References[]

  1. Bristow D, Haynes JD, Sylvester R, Frith CD, Rees G (2005). "Blinking suppresses the neural response to unchanging retinal stimulation". Current Biology 15 (14): 1296–1300. PMID 16051173. Retrieved on 2008-11-02.

External links[]

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