
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 345628 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% | /102173 |

22.3% | /91393 |
Origin of answers
Answers distribution by gender:
gender
men
52%
102173
women
48%
91393
Answers distribution by language:
language
German language
1%
4520
Polish language
90%
311870
English language
7%
26515
Russian language
0%
2723
Answers distribution by country:
country

91%
317133

2%
10205

1%
4892

1%
4216

1%
3532

0%
1350

0%
992

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