| Federal Subjects of Russia | 0 | - | 4.95 | 150,028 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,412 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 533,245 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 23,542 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,232 |
| History of Russia Quiz | 0 | - | 4.47 | 32,031 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,492 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,454 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,392 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,887 |
| Official European Union Languages | 0 | - | 4.97 | 240,455 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,877 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,560 |
| Geography of Russia | 0 | - | 4.57 | 21,627 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,488 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,376 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,120 |
| Celtic Nations | 0 | - | 4.61 | 47,130 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,590 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,260 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,532 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,488 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,171 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,333 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,753 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,638 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,803 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,433 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,954 |
| Slavic Countries | 0 | - | 4.96 | 112,566 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,238 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,426 |
| German Groups of Things | 0 | - | 4.47 | 38,684 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,773 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,531 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 363,022 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,814 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,249 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,932 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 89,287 |
| Famous Russians | 0 | - | 4.16 | 23,935 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,625 |
| States of Germany | 0 | - | 4.95 | 155,040 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,855 |
| Regions of Italy | 0 | - | 4.92 | 77,314 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,961 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,676 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,954 |
| Champions League Winners | 0 | - | 4.92 | 1,018,586 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,637 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.74 | 58,841 |
| Countries That Border Russia | 0 | - | 4.98 | 465,075 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,879 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.43 | 324,647 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,990 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,961 |
| Russia Country Quiz | 0 | - | 4.83 | 115,507 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,866 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.83 | 35,671 |
| Departments of France | 0 | - | 4.93 | 55,460 |
| Word Chain - France | 0 | - | 4.38 | 42,972 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,795 |
| British Groups of Things | 0 | - | 4.26 | 83,049 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,135 |
| England or Wales? | 0 | - | 4.94 | 46,092 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,581 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 111,635 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,999 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 93,657 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,813 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,742 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 124,588 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,943 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,090 |
| Slavic Languages | 0 | - | 4.67 | 54,802 |
| Countries that Border Hungary | 0 | - | 4.98 | 105,130 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 28,101 |
| Moldova Country Quiz | 0 | - | 4.82 | 31,082 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,321 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,338 |
| Name that Greek Letter | 0 | - | 4.93 | 325,401 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,765 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,671 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,117 |
| Word Scramble - Asian Countries | 0 | - | 4.48 | 109,419 |
| Countries of Asia - One Minute Sprint | 0 | - | 4.41 | 277,045 |
| Word Chain - Africa | 0 | - | 4.47 | 31,740 |
| Top European Languages on a Map | 0 | - | 4.77 | 133,055 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,376 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,911 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,928 |
| Word Chain - Germany | 0 | - | 4.31 | 22,703 |
| The Trojan War | 0 | - | 4.83 | 40,119 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,349 |
| History of Italy | 0 | - | 4.55 | 32,198 |
| Word Chain - Italy | 0 | - | 4.07 | 23,234 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,567 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,728 |
| Roman Emperors | 0 | - | 4.95 | 121,515 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,866 |
| Most Common Last Names in Sweden | 0 | - | 4.50 | 15,507 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,481 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,426 |
| Name a Valid English City | 0 | - | 4.19 | 16,848 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 281,127 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,752 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,490 |
| Name a Valid Answer - United States #1 | 0 | - | 4.61 | 94,518 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,522 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,965 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,519 |
| European Geography By Letter - D | 0 | - | 4.49 | 119,058 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,464 |
| European Geography By Letter - M | 0 | - | 4.69 | 133,007 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,410 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,988 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,263 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,903 |
| Europe Map Quiz | 0 | - | 5.00 | 4,795,079 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,645 |
| Capitals of French Regions | 0 | - | 4.45 | 16,216 |
| Regions of France | 0 | - | 4.70 | 122,494 |
| France Immigration by Country | 0 | - | 4.70 | 77,038 |
| Famous Germans | 0 | - | 4.50 | 55,894 |
| Capitals of German States | 0 | - | 4.74 | 29,101 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,602 |
| Germany True or False? | 0 | - | 4.61 | 49,088 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,609 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,698 |
| Ancient Greek Words | 0 | - | 4.93 | 112,732 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,582 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,976 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,515 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,995 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,922 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 293,048 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,698 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,783 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,392 |
| Famous People from Africa | 0 | - | 4.45 | 11,015 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 33,122 |
| Four Letter African Geography | 0 | - | 4.68 | 19,889 |
| Word Chain - The Bible | 0 | - | 4.48 | 51,049 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,778 |
| Australian Capitals | 0 | - | 4.92 | 62,884 |
| Word Chain - Australia | 0 | - | 4.38 | 38,270 |
| European Physical Geography | 0 | - | 4.26 | 33,622 |
| Word Scramble - European Cities | 0 | - | 3.84 | 18,983 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,542 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,181 |
| Ukraine Country Quiz | 0 | - | 4.43 | 48,069 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,858 |
| Romania Country Quiz | 0 | - | 4.63 | 54,231 |
| History of Austria | 0 | - | 4.70 | 17,992 |
| Geography of the French Empire | 0 | - | 4.45 | 27,241 |
| The French Revolution | 0 | - | 4.47 | 24,175 |
| France Multiple Choice | 0 | - | 4.39 | 40,881 |
| History of France | 0 | - | 4.61 | 57,765 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,581 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,648 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,655 |
| The Vikings! | 0 | - | 4.46 | 28,432 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,452 |
| The Portuguese Empire | 0 | - | 4.58 | 12,120 |
| American to British Word Translation | 0 | - | 4.14 | 139,869 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,098 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,500 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,861 |
| Champions League Top 4 | 0 | - | 4.78 | 139,734 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,699 |
| Asia Map Quiz | 0 | - | 4.99 | 927,186 |
| Africa Map Quiz | 0 | - | 5.00 | 2,131,389 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,662,278 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,156 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,644 |
| Australia Map Quiz | 0 | - | 4.95 | 346,611 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,890 |
| South American Geography Quiz #1 | 0 | - | 4.63 | 32,942 |
| Word Chain - South America | 0 | - | 4.51 | 24,029 |
| United States Map Quiz | 0 | - | 4.98 | 4,174,290 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 750,533 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,478 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 93,011 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,362 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,686 |
| European Geography By Letter - E | 0 | - | 4.23 | 121,852 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,844 |
| European Geography By Letter - H | 0 | - | 4.30 | 97,508 |
| European Geography By Letter - G | 0 | - | 4.27 | 104,300 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,833 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,482 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,826 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,762 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 52,068 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,598 |
| European Geography A-Z | 0 | - | 4.29 | 49,536 |
| Country Codes of Europe | 0 | - | 3.45 | 13,857 |
| The Only European Country ... | 0 | - | 4.91 | 219,755 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,918 |
| Lithuania Country Quiz | 0 | - | 4.63 | 31,849 |
