| Countries With the Most Russian Speakers | 0 | - | 4.97 | 99,483 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,645 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,214 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 210,946 |
| Countries That Border Russia | 0 | - | 4.98 | 460,259 |
| Russia Country Quiz | 0 | - | 4.85 | 114,020 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,837 |
| Official European Union Languages | 0 | - | 4.97 | 237,620 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,290 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,488 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,854 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,231 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,466 |
| Name that Greek Letter | 0 | - | 4.93 | 322,493 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,735 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,558 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,663 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,175 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,345 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,086 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,227 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,361 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,189 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,734 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,390 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,005 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,314 |
| Celtic Nations | 0 | - | 4.69 | 46,871 |
| Champions League Winners | 0 | - | 4.92 | 1,000,471 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,607 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,571 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,669 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,299 |
| States of Germany | 0 | - | 4.96 | 151,021 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,348 |
| Regions of Italy | 0 | - | 4.92 | 75,173 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,635 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,142 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,713 |
| American to British Word Translation | 0 | - | 4.13 | 138,228 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,806 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,614 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 65,890 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,289 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,701 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,678 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,038 |
| Departments of France | 0 | - | 4.93 | 53,269 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,428 |
| British Spellings | 0 | - | 4.06 | 99,349 |
| England or Wales? | 0 | - | 4.94 | 45,478 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,201 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 79,730 |
| English Words of Arabic Origin | 0 | - | 4.54 | 49,673 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,501 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,626 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,263 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,805 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,102 |
| Slavic Languages | 0 | - | 4.68 | 54,147 |
| Countries that Border Poland | 0 | - | 4.99 | 171,757 |
| Russian History A-Z | 0 | - | 4.38 | 31,381 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,551 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,049 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,627 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,856 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,733 |
| The Trojan War | 0 | - | 4.83 | 39,552 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,130 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,519 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,269 |
| Roman Emperors | 0 | - | 4.95 | 119,204 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,335 |
| Languages of Spain | 0 | - | 4.36 | 23,229 |
| British to American Word Translation | 0 | - | 3.74 | 254,903 |
| British Foods by Description | 0 | - | 3.94 | 48,290 |
| British and American Word Differences | 0 | - | 2.63 | 46,822 |
| History of Russia Quiz | 0 | - | 4.49 | 31,839 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,637 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,300 |
| History of Italy | 0 | - | 4.55 | 31,893 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,423 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,557 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,091 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,343 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,661 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,118 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,099 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,977 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,435 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,300 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,022 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,803 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,435 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,593 |
| Europe Map Quiz | 0 | - | 5.00 | 4,745,009 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,126 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,763 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,073 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,110 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,794 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.73 | 65,529 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,223 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,895 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,735 |
| Capitals of French Regions | 0 | - | 4.45 | 16,016 |
| Regions of France | 0 | - | 4.77 | 119,912 |
| France Immigration by Country | 0 | - | 4.72 | 76,170 |
| German Loan Words | 0 | - | 4.27 | 135,603 |
| Famous Germans | 0 | - | 4.50 | 54,819 |
| German Groups of Things | 0 | - | 4.46 | 38,377 |
| Capitals of German States | 0 | - | 4.74 | 28,890 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,196 |
| Germany True or False? | 0 | - | 4.61 | 48,661 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,712 |
| Ancient Greek Words | 0 | - | 4.93 | 111,082 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,855 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,826 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,047 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,150 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,816 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,354 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,455 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,991 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,111 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,127 |
| Africa Map Quiz | 0 | - | 5.00 | 2,110,324 |
| Oceania Map Quiz | 0 | - | 4.98 | 638,371 |
| Australian Capitals | 0 | - | 4.92 | 62,655 |
| European Physical Geography | 0 | - | 4.26 | 33,419 |
| Albania Country Quiz | 0 | - | 4.54 | 38,825 |
| Geography of Russia | 0 | - | 4.57 | 21,476 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,849 |
| Serbia Country Quiz | 0 | - | 4.44 | 34,893 |
| History of Austria | 0 | - | 4.70 | 17,796 |
| Geography of the French Empire | 0 | - | 4.45 | 26,997 |
| The French Revolution | 0 | - | 4.46 | 23,857 |
| France Multiple Choice | 0 | - | 4.38 | 40,678 |
| History of France | 0 | - | 4.59 | 56,590 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,423 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,799 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 435,073 |
| The Vikings! | 0 | - | 4.46 | 28,283 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,811 |
| The Portuguese Empire | 0 | - | 4.58 | 12,027 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,418 |
| Champions League Top 4 | 0 | - | 4.77 | 134,885 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,443,797 |
| Asia Map Quiz | 0 | - | 4.99 | 910,721 |
| Japanese Language - Katakana Practice | 0 | - | 4.61 | 32,782 |
| Elemental Words | 0 | - | 4.96 | 52,115 |
| Mythical Creatures Quiz #1 | 0 | - | 4.92 | 705,694 |
| Countries of Africa | 0 | - | 5.00 | 2,520,551 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,236 |
| African East Coast | 0 | - | 4.96 | 95,498 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,337 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,170 |
| Australia Map Quiz | 0 | - | 4.94 | 343,223 |
| United States Map Quiz | 0 | - | 4.98 | 4,147,977 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.21 | 52,565 |
| Top 10 Non-English Languages of Los Angeles | 0 | - | 4.42 | 59,722 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,028 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,455 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,871 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,161 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,425 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,846 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,091 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,710 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,671 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,356 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,083 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,424 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,515 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,648 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,263 |
| European Geography A-Z | 0 | - | 4.29 | 49,103 |
| Country Codes of Europe | 0 | - | 3.46 | 13,675 |
| The Only European Country ... | 0 | - | 4.91 | 215,044 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,267 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,302 |
| Seas of Europe | 0 | - | 4.37 | 84,470 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 27,875 |
| Poland Country Quiz | 0 | - | 4.22 | 62,969 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,588 |
| Austria... or Australia? | 0 | - | 4.68 | 104,092 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,998 |
| Presidents of France | 0 | - | 4.25 | 23,976 |
| France A-Z | 0 | - | 4.16 | 38,111 |
| Word Chain - France | 0 | - | 4.38 | 42,670 |
| History of Germany | 0 | - | 4.39 | 52,719 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,865 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,836 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,235 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,534 |
| Italian Foods | 0 | - | 4.31 | 72,433 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,134 |
| The Mafia Quiz | 0 | - | 4.46 | 23,251 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,621 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,780 |
