
Global Illusions Knowledge Test
Since 2013, we have been measuring the global knowledge about illusions through the online quiz game.
The results are based on 345888 answers to questions in category illusions, given by players from 146 countries.
This test has questions in the following languages:
German language, Polish language, English language and Russian language.
Results by country
Results by gender

38.5% | /102203 |

22.3% | /91417 |
Origin of answers
Answers distribution by gender:
gender
men
52%
102203
women
48%
91417
Answers distribution by language:
language
German language
1%
4532
Polish language
90%
312074
English language
7%
26557
Russian language
0%
2725
Answers distribution by country:
country

91%
317285

2%
10242

1%
4901

1%
4216

1%
3567

0%
1352

0%
992

0%
852

0%
789

0%
560
Quiz size
Number of active questions per language:
language
German language
22%
11
Polish language
37%
18
English language
29%
14
Russian language
10%
5