Global Optical Illusions Knowledge Test
Since 2013, we have been measuring the global knowledge about optical illusions through the online quiz game.
The results are based on 521556 answers to questions in category optical illusions, given by players from 142 countries.
This test has questions in the following languages:
Italian language, German language, English language, Polish language, Russian language, Ukrainian language and Polish language.
Results by country
Results by gender
40.6% | /157636 |
23.6% | /140104 |
Origin of answers
Answers distribution by gender:
gender
men
52%
157636
women
48%
140104
Answers distribution by language:
language
Italian language
0%
251
German language
0%
4517
English language
5%
27896
Polish language
56%
295086
Russian language
0%
2938
Ukrainian language
0%
972
Polish language
36%
189896
Answers distribution by country:
country
Poland
95%
496595
the United States
2%
11037
Germany
0%
5167
India
0%
4428
the United Kingdom
0%
4225
Ukraine
0%
1528
Russia
0%
1431
Australia
0%
1098
Canada
0%
891
Austria
0%
850
Quiz size
Number of active questions per language:
language
Italian language
1%
1
German language
17%
11
English language
23%
15
Polish language
21%
14
Russian language
9%
6
Ukrainian language
9%
6
Polish language
17%
11