Optical illusions knowledge map

The current map is based on 454010 answers.

Number of active questions per language

language
number of questions
English language (optical illusions)  
15
Polish language (iluzje optyczne, złudzenia optyczne)  
14
Russian language (оптические иллюзии)  
6
Polish language (iluzje optyczne, złudzenia optyczne)  
10
Italian language (illusioni ottiche)  
1
German language (optische Täuschungen)  
11
Ukrainian language (оптичні ілюзії)  
6

Results

Country
Results
answers
flagDominican Republic
100%
100%
6
flagHaiti
100%
100%
3
flagUruguay
100%
100%
3
flagMontenegro
100%
100%
3
flagZimbabwe
100%
100%
2
flagSudan
100%
100%
2
flagVenezuela
100%
100%
1
flagAngola
100%
100%
1
flagRepublic of Macedonia
100%
100%
1
flagEritrea
100%
100%
1
flagTajikistan
100%
100%
1
flagFiji
100%
100%
1
flagMozambique
85%
85%
7
flagMalta
83%
83%
12
flagGuatemala
83%
83%
6
flagSlovenia
79%
79%
29
flagArgentina
79%
79%
24
flagKenya
78%
78%
60
flagLithuania
77%
77%
48
flagItaly
75%
75%
167
flagIraq
75%
75%
48
flagHungary
75%
75%
33
flagOman
75%
75%
12
flagIsrael
74%
74%
59
flagSweden
74%
74%
39
flagCzech Republic
73%
73%
89
flagDenmark
73%
73%
57
flagBosnia and Herzegovina
73%
73%
41
flagCroatia
72%
72%
80
flagMexico
72%
72%
73
flagBrazil
72%
72%
43
flagFrance
71%
71%
131
flagBulgaria
71%
71%
74
flagJapan
71%
71%
28
flagTanzania
71%
71%
14
flagPortugal
70%
70%
70
flagMorocco
70%
70%
20
flagLuxembourg
69%
69%
86
flagEstonia
69%
69%
39
flagPoland
68%
68%
431420
flagthe Netherlands
68%
68%
239
flagNew Zealand
68%
68%
94
flagRomania
68%
68%
70
flagGermany
67%
67%
1104
flagSwitzerland
66%
66%
124
flagSerbia
66%
66%
45
flagSri Lanka
66%
66%
12
flagMauritius
66%
66%
3
flagthe United States
65%
65%
8528
flagEgypt
65%
65%
90
flagSingapore
65%
65%
89
flagNepal
65%
65%
47
flagthe United Kingdom
64%
64%
2469
flagAustralia
64%
64%
653
flagCanada
64%
64%
587
flagGreece
64%
64%
258
flagAustria
64%
64%
150
flagBelarus
64%
64%
73
flagKazakhstan
64%
64%
50
flagKuwait
64%
64%
45
flagJamaica
64%
64%
14
flagUganda
63%
63%
19
flagIndonesia
62%
62%
121
flagTurkey
62%
62%
45
flagUnknown
61%
61%
308
flagRussia
60%
60%
308
flagMalaysia
60%
60%
176
flagNorway
60%
60%
126
flagFinland
60%
60%
23
flagCambodia
60%
60%
15
flagUkraine
59%
59%
531
flagAzerbaijan
59%
59%
42
flagPakistan
57%
57%
152
flagColombia
57%
57%
7
flagChina
56%
56%
87
flagGeorgia
56%
56%
39
flagthe United Arab Emirates
55%
55%
152
flagSouth Africa
55%
55%
115
flagSpain
55%
55%
95
flagSouth Korea
55%
55%
94
flagThailand
55%
55%
20
flagRepublic of Ireland
54%
54%
182
flagAlbania
54%
54%
71
flagLebanon
54%
54%
53
flagIndia
53%
53%
2720
flagBelgium
53%
53%
89
flagIceland
53%
53%
30
flagVietnam
53%
53%
15
flagGhana
53%
53%
13
flagUzbekistan
53%
53%
13
flagIran
50%
50%
40
flagLatvia
50%
50%
16
flagChile
50%
50%
4
flagMaldives
50%
50%
2
flagMoldova
50%
50%
2
flagSomalia
50%
50%
2
flagBotswana
50%
50%
2
flagthe Philippines
49%
49%
372
flagNigeria
48%
48%
66
flagBangladesh
48%
48%
33
flagSlovakia
47%
47%
17
flagRwanda
45%
45%
60
flagQatar
44%
44%
74
flagNamibia
44%
44%
9
flagSaudi Arabia
42%
42%
7
flagHonduras
40%
40%
5
flagTaiwan
40%
40%
5
flagCyprus
40%
40%
5
flagTurkmenistan
40%
40%
5
flagTunisia
36%
36%
11
flagArmenia
33%
33%
9
flagCuba
33%
33%
6
flagKG
16%
16%
6
flagAfghanistan
0%
0%
3
flagPapua New Guinea
0%
0%
2
flagBahamas
0%
0%
2
flagYemen
0%
0%
1
flagMali
0%
0%
1
flagLesotho
0%
0%
1
flagJordan
0%
0%
1
flagSeychelles
0%
0%
1
flagGuyana
0%
0%
1
Countries with less than 250 answers are not shown. Show all data
A more detailed analysis is available: Global optical illusions knowledge test
The results are released under the CC-attribution license. You may freely use it and re-distribute, but you must provide the link back to this page