| Federal Subjects of Russia | 0 | - | 4.94 | 144,007 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,356 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,512 |
| Countries That Border Russia | 0 | - | 4.98 | 458,923 |
| Russia Country Quiz | 0 | - | 4.85 | 113,635 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,581 |
| Official European Union Languages | 0 | - | 4.97 | 236,534 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,703 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,204 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,380 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,541 |
| Countries that Beat Russia | 0 | - | 4.84 | 81,899 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,568 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,239 |
| Celtic Nations | 0 | - | 4.69 | 46,812 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,852 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,828 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,890 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,797 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,570 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,048 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,100 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,342 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,932 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,334 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,217 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,266 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,793 |
| States of Germany | 0 | - | 4.96 | 150,057 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,016 |
| Regions of Italy | 0 | - | 4.92 | 74,727 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,815 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,353 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,181 |
| Champions League Winners | 0 | - | 4.92 | 996,371 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,147 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,520 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,406 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,539 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,207 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,174 |
| Croatia Country Quiz | 0 | - | 4.83 | 42,853 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,038 |
| Departments of France | 0 | - | 4.93 | 52,829 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,369 |
| England or Wales? | 0 | - | 4.94 | 45,318 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,498 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,450 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,599 |
| Word Scramble - European Countries | 0 | - | 4.70 | 140,991 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,050 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,839 |
| Slavic Languages | 0 | - | 4.67 | 53,986 |
| Countries that Border Poland | 0 | - | 4.99 | 171,355 |
| Russian History A-Z | 0 | - | 4.38 | 30,833 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,483 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,701 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,618 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,541 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,749 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,513 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,935 |
| Name that Greek Letter | 0 | - | 4.94 | 321,673 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,429 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,246 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,445 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,687 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,538 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,135 |
| Famous Russians | 0 | - | 4.16 | 23,728 |
| History of Russia Quiz | 0 | - | 4.49 | 31,794 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,565 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,493 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 95,907 |
| The Trojan War | 0 | - | 4.83 | 39,428 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,538 |
| History of Italy | 0 | - | 4.55 | 31,816 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,163 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,050 |
| Roman Emperors | 0 | - | 4.95 | 118,493 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,482 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,981 |
| A Quiz About The Beatles | 0 | - | 4.56 | 47,558 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,106 |
| Who Did that Motown Song? | 0 | - | 4.48 | 13,019 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,413 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 110,914 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,862 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,718 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,223 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,903 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,677 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,630 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,028 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,311 |
| Europe Map Quiz | 0 | - | 5.00 | 4,731,416 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,991 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,618 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,944 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,982 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,601 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,149 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,611 |
| Capitals of French Regions | 0 | - | 4.45 | 15,985 |
| Regions of France | 0 | - | 4.78 | 119,255 |
| France Immigration by Country | 0 | - | 4.72 | 75,966 |
| Famous Germans | 0 | - | 4.50 | 54,616 |
| German Groups of Things | 0 | - | 4.46 | 38,306 |
| Capitals of German States | 0 | - | 4.74 | 28,812 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,096 |
| Germany True or False? | 0 | - | 4.61 | 48,535 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,465 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,152 |
| Ancient Greek Words | 0 | - | 4.92 | 110,700 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,516 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,828 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,045 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,963 |
| Imagine Lyrics | 0 | - | 4.53 | 43,062 |
| Beatles Songs by Synonyms | 0 | - | 4.74 | 40,296 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,344 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,316 |
| Australian Capitals | 0 | - | 4.92 | 62,593 |
| European Physical Geography | 0 | - | 4.26 | 33,373 |
| Albania Country Quiz | 0 | - | 4.54 | 38,655 |
| Geography of Russia | 0 | - | 4.57 | 21,427 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 41,861 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,775 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,318 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,032 |
| Romania Country Quiz | 0 | - | 4.63 | 53,351 |
| Serbia Country Quiz | 0 | - | 4.44 | 34,770 |
| History of Austria | 0 | - | 4.70 | 17,748 |
| Geography of the French Empire | 0 | - | 4.48 | 26,934 |
| The French Revolution | 0 | - | 4.46 | 23,785 |
| France Multiple Choice | 0 | - | 4.38 | 40,635 |
| History of France | 0 | - | 4.59 | 56,053 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,383 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,555 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,617 |
| The Vikings! | 0 | - | 4.45 | 28,245 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,699 |
| The Portuguese Empire | 0 | - | 4.54 | 11,990 |
| American to British Word Translation | 0 | - | 4.06 | 117,060 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,703 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,223 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,394 |
| Beatles Lyrics First Names | 0 | - | 4.38 | 34,472 |
| Beatles Songs by Synopsis | 0 | - | 4.31 | 32,681 |
| Viva la Vida Lyrics | 0 | - | 4.37 | 49,556 |
| Elton John Quiz | 0 | - | 4.48 | 18,402 |
| Champions League Top 4 | 0 | - | 4.77 | 133,817 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,440,491 |
| Asia Map Quiz | 0 | - | 4.99 | 907,043 |
| Countries of Africa | 0 | - | 5.00 | 2,507,929 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,816 |
| African East Coast | 0 | - | 4.96 | 95,055 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,926 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,800 |
| Australia Map Quiz | 0 | - | 4.94 | 342,486 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,894 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,150 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,210 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,998 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,308 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,224 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,653 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,909 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,284 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,497 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,174 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,923 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,298 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,393 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,513 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,564 |
| European Geography A-Z | 0 | - | 4.28 | 49,003 |
| Country Codes of Europe | 0 | - | 3.46 | 13,653 |
| The Only European Country ... | 0 | - | 4.91 | 213,840 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,541 |
| Latvia Country Quiz | 0 | - | 4.75 | 31,772 |
| Austria... or Australia? | 0 | - | 4.68 | 103,871 |
| Presidents of France | 0 | - | 4.25 | 23,903 |
| Word Chain - France | 0 | - | 4.38 | 42,582 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,775 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,771 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,954 |
| Italian Foods | 0 | - | 4.31 | 72,190 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,953 |
| The Mafia Quiz | 0 | - | 4.46 | 23,206 |
| History of The Netherlands | 0 | - | 4.46 | 17,311 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,958 |
| Canary Islands | 0 | - | 4.61 | 17,402 |
| Real Madrid 2010s Starting XI | 0 | - | 4.89 | 66,166 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,152 |
| British Spellings | 0 | - | 4.07 | 99,204 |
| British Groups of Things | 0 | - | 4.25 | 82,670 |
| British Acronyms | 0 | - | 4.39 | 45,619 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,946 |
| British Monopoly Board | 0 | - | 4.52 | 41,034 |
