
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 345356 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% | /102155 |

22.3% | /91384 |
Origin of answers
Answers distribution by gender:
gender
men
52%
102155
women
48%
91384
Answers distribution by language:
language
German language
1%
4499
Polish language
90%
311677
English language
7%
26462
Russian language
0%
2718
Answers distribution by country:
country

91%
316961

2%
10174

1%
4863

1%
4213

1%
3519

0%
1348

0%
986

0%
852

0%
788

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