| Federal Subjects of Russia | 0 | - | 4.95 | 148,067 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,692 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,547 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 97,963 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 86,972 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,343 |
| History of Russia Quiz | 0 | - | 4.47 | 31,957 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,343 |
| Official European Union Languages | 0 | - | 4.97 | 238,963 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,156 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,141 |
| Geography of Russia | 0 | - | 4.57 | 21,556 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,651 |
| Famous Russians | 0 | - | 4.16 | 23,870 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,997 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,120 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,920 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,433 |
| Celtic Nations | 0 | - | 4.69 | 47,001 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,009 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 120,400 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,800 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,352 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,021 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,349 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,220 |
| European Geography By Letter - R | 0 | - | 4.42 | 94,029 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,298 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,857 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,902 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,406 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,282 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,593 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,435 |
| Slavic Countries | 0 | - | 4.96 | 111,909 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,080 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,136 |
| Famous Germans | 0 | - | 4.50 | 55,541 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,485 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,209 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,832 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,313 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,768 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,408 |
| Word Chain - Russia | 0 | - | 4.33 | 15,772 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,121 |
| States of Germany | 0 | - | 4.95 | 153,263 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,303 |
| Regions of Italy | 0 | - | 4.92 | 76,287 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,448 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,448 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,426 |
| Champions League Winners | 0 | - | 4.92 | 1,010,107 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,733 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,591 |
| Countries That Border Russia | 0 | - | 4.98 | 462,887 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,167 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,758 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,282 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,630 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,481 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,166 |
| European Geography By Letter - I | 0 | - | 4.09 | 95,909 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,548 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,027 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,158 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,456 |
| European Geography A-Z | 0 | - | 4.29 | 49,369 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,973 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,415 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,684 |
| Russia Country Quiz | 0 | - | 4.83 | 114,715 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,495 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,420 |
| Famous French People | 0 | - | 4.07 | 35,867 |
| Departments of France | 0 | - | 4.93 | 54,500 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,620 |
| History of The Netherlands | 0 | - | 4.46 | 17,488 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,962 |
| England or Wales? | 0 | - | 4.94 | 45,806 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,053 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,676 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,895 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,669 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,661 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,656 |
| Slavic Languages | 0 | - | 4.68 | 54,475 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,444 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,929 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,890 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,864 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,646 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,091 |
| France A-Z | 0 | - | 4.16 | 38,270 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,025 |
| Name that Greek Letter | 0 | - | 4.93 | 324,205 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,666 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,517 |
| Switzerland A-Z | 0 | - | 4.45 | 25,693 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,370 |
| Embarrassing Chapters in Russian History | 0 | - | 3.70 | 20,325 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,783 |
| Russian History A-Z | 0 | - | 4.35 | 31,880 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,552 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,181 |
| The Trojan War | 0 | - | 4.83 | 39,804 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,276 |
| Famous Irish People | 0 | - | 4.05 | 46,024 |
| History of Italy | 0 | - | 4.55 | 32,060 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,982 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,660 |
| Roman Emperors | 0 | - | 4.95 | 120,424 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,723 |
| Famous Nordic People | 0 | - | 4.34 | 20,176 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,624 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,301 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,546 |
| People on Money - England | 0 | - | 4.29 | 16,625 |
| London A-Z | 0 | - | 4.10 | 40,818 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,508 |
| Asian Cities A-Z by Clue | 0 | - | 4.51 | 42,419 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,737 |
| Africa A-Z | 0 | - | 4.57 | 46,686 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,631 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,297 |
| Europe Map Quiz | 0 | - | 5.00 | 4,772,093 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,361 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,018 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,308 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,303 |
| Capitals of French Regions | 0 | - | 4.45 | 16,117 |
| Regions of France | 0 | - | 4.72 | 121,277 |
| France Immigration by Country | 0 | - | 4.70 | 76,694 |
| German Groups of Things | 0 | - | 4.46 | 38,529 |
| Capitals of German States | 0 | - | 4.74 | 28,990 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,403 |
| Germany True or False? | 0 | - | 4.61 | 48,895 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,153 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,981 |
| Ancient Greek Words | 0 | - | 4.93 | 111,932 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,507 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,344 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,460 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,113 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,130 |
| Famous Scottish People | 0 | - | 4.22 | 18,415 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,275 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 65,847 |
| Asian Geography By Letter - M | 0 | - | 4.48 | 61,508 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 58,017 |
| Asian Geography by Letter - T | 0 | - | 4.51 | 57,478 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,138 |
| Asian Geography By Letter - O | 0 | - | 4.66 | 32,046 |
| Middle East A-Z | 0 | - | 4.47 | 46,152 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,320,076 |
| Oceania Map Quiz | 0 | - | 4.98 | 653,989 |
| Australian Capitals | 0 | - | 4.92 | 62,759 |
| Canada A-Z | 0 | - | 4.73 | 32,893 |
| European Physical Geography | 0 | - | 4.26 | 33,542 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,297 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,023 |
| Ukraine Country Quiz | 0 | - | 4.43 | 47,804 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,558 |
| Romania Country Quiz | 0 | - | 4.63 | 53,919 |
| History of Austria | 0 | - | 4.70 | 17,910 |
| Geography of the French Empire | 0 | - | 4.45 | 27,157 |
| The French Revolution | 0 | - | 4.47 | 24,066 |
| France Multiple Choice | 0 | - | 4.39 | 40,774 |
| History of France | 0 | - | 4.59 | 57,290 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,116 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,283 |
| The Vikings! | 0 | - | 4.46 | 28,370 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,218 |
| The Portuguese Empire | 0 | - | 4.58 | 12,086 |
| American to British Word Translation | 0 | - | 4.14 | 139,335 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,953 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,726 |
| Champions League Top 4 | 0 | - | 4.77 | 137,357 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,814 |
| Asia Map Quiz | 0 | - | 4.99 | 919,926 |
| A Quiz About Islam | 0 | - | 4.31 | 48,506 |
| Countries That Don't Recognize Israel | 0 | - | 4.68 | 34,960 |
| Africa Map Quiz | 0 | - | 5.00 | 2,122,120 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 157,673 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,960 |
| Australia Map Quiz | 0 | - | 4.95 | 345,240 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,680 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 53,117 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,527 |
| United States Map Quiz | 0 | - | 4.98 | 4,163,864 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 748,103 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,858 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,745 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,629 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,108 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,752 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,734 |
| Country Codes of Europe | 0 | - | 3.43 | 13,756 |
| The Only European Country ... | 0 | - | 4.91 | 217,464 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,624 |
