| European Countries by First 2 Letters | 0 | - | 4.95 | 529,542 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,370 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 78,553 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,152 |
| Famous Germans | 0 | - | 4.50 | 55,293 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,495 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,128 |
| Official European Union Languages | 0 | - | 4.97 | 238,500 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,850 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,191 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,603 |
| Famous Russians | 0 | - | 4.16 | 23,841 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,987 |
| Famous French People | 0 | - | 4.06 | 35,576 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,833 |
| History of Russia Quiz | 0 | - | 4.47 | 31,917 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,385 |
| Celtic Nations | 0 | - | 4.69 | 46,945 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,253 |
| European Geography By Letter - B #1 | 0 | - | 4.64 | 118,916 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,979 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,625 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,524 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,665 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,549 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,856 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,705 |
| European Geography By Letter - V | 0 | - | 4.43 | 93,015 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,444 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,610 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,506 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 171,848 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,281 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,188 |
| Slavic Countries | 0 | - | 4.96 | 111,656 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,627 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,060 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,353 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,007 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 355,965 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,455 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,127 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,897 |
| States of Germany | 0 | - | 4.96 | 152,572 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,034 |
| Famous Irish People | 0 | - | 4.05 | 45,994 |
| Regions of Italy | 0 | - | 4.92 | 75,867 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,157 |
| Famous Nordic People | 0 | - | 4.34 | 20,115 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,614 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,939 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,206 |
| Champions League Winners | 0 | - | 4.92 | 1,006,711 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,507 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,491 |
| Geography of Russia | 0 | - | 4.57 | 21,528 |
| Romania Country Quiz | 0 | - | 4.63 | 53,779 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,034 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,700 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,670 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,926 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,063 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,729 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,544 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,182 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,746 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,931 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,193 |
| European Geography A-Z | 0 | - | 4.29 | 49,267 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,254 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,819 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,340 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,343 |
| Departments of France | 0 | - | 4.93 | 54,102 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,546 |
| History of The Netherlands | 0 | - | 4.46 | 17,434 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,781 |
| Famous Scottish People | 0 | - | 4.22 | 18,393 |
| England or Wales? | 0 | - | 4.94 | 45,688 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,345 |
| Famous Australians by Description | 0 | - | 4.23 | 27,930 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,656 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,700 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,964 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,509 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,446 |
| Slavic Languages | 0 | - | 4.68 | 54,360 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,845 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,222 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,873 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,803 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,769 |
| France A-Z | 0 | - | 4.16 | 38,205 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 647,417 |
| Name that Greek Letter | 0 | - | 4.93 | 323,446 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,612 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,464 |
| Switzerland A-Z | 0 | - | 4.45 | 25,646 |
| Africa A-Z | 0 | - | 4.57 | 46,606 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,211 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,084 |
| Word Chain - Russia | 0 | - | 4.33 | 15,751 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,728 |
| Russian History A-Z | 0 | - | 4.38 | 31,714 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,395 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,142 |
| The Trojan War | 0 | - | 4.83 | 39,726 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,840 |
| History of Italy | 0 | - | 4.55 | 31,974 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,782 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,529 |
| Roman Emperors | 0 | - | 4.95 | 120,041 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,661 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,237 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,533 |
| People on Money - England | 0 | - | 4.29 | 16,611 |
| London A-Z | 0 | - | 4.10 | 40,774 |
| Asian Cities A-Z by Clue | 0 | - | 4.49 | 35,566 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 279,147 |
| Famous Chinese People | 0 | - | 4.09 | 11,877 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,944 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,189 |
| Europe Map Quiz | 0 | - | 5.00 | 4,762,908 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,273 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,939 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,224 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,234 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,010 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,007 |
| Capitals of French Regions | 0 | - | 4.45 | 16,072 |
| Regions of France | 0 | - | 4.72 | 120,785 |
| France Immigration by Country | 0 | - | 4.70 | 76,516 |
| German Groups of Things | 0 | - | 4.46 | 38,478 |
| Capitals of German States | 0 | - | 4.74 | 28,953 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,333 |
| Germany True or False? | 0 | - | 4.61 | 48,803 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,015 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,816 |
| Ancient Greek Words | 0 | - | 4.93 | 111,597 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,356 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,266 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,247 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,265 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,712 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,137 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 65,700 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,413 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,902 |
| Asian Geography by Letter - T | 0 | - | 4.51 | 57,367 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,032 |
| Asian Geography By Letter - O | 0 | - | 4.65 | 31,878 |
| Middle East A-Z | 0 | - | 4.47 | 46,015 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,316,662 |
| Africa Map Quiz | 0 | - | 5.00 | 2,117,829 |
| Oceania Map Quiz | 0 | - | 4.98 | 642,287 |
| Australian Capitals | 0 | - | 4.92 | 62,722 |
| Canada A-Z | 0 | - | 4.73 | 32,833 |
| European Physical Geography | 0 | - | 4.26 | 33,509 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,217 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,962 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,706 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,434 |
| History of Austria | 0 | - | 4.70 | 17,861 |
| Geography of the French Empire | 0 | - | 4.45 | 27,060 |
| The French Revolution | 0 | - | 4.47 | 23,931 |
| France Multiple Choice | 0 | - | 4.39 | 40,741 |
| History of France | 0 | - | 4.59 | 56,978 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,106 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,132 |
| The Vikings! | 0 | - | 4.46 | 28,343 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,126 |
| The Portuguese Empire | 0 | - | 4.58 | 12,064 |
| American to British Word Translation | 0 | - | 4.14 | 139,053 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,894 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,663 |
| Champions League Top 4 | 0 | - | 4.77 | 136,449 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,448,215 |
| Asia Map Quiz | 0 | - | 4.99 | 916,744 |
| A Quiz About Islam | 0 | - | 4.31 | 48,440 |
| Countries That Don't Recognize Israel | 0 | - | 4.68 | 34,845 |
| Most Common English Verbs - Extreme | 0 | - | 4.96 | 157,208 |
| Countries of Africa | 0 | - | 5.00 | 2,536,939 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,826 |
| African East Coast | 0 | - | 4.96 | 96,064 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,877 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,687 |
| Australia Map Quiz | 0 | - | 4.95 | 344,605 |
| U.S. Geography by Letter - B | 0 | - | 4.53 | 69,418 |
| U.S. Geography by Letter - S | 0 | - | 4.55 | 52,863 |
| U.S. Federal Holidays | 0 | - | 4.33 | 99,462 |
| United States Map Quiz | 0 | - | 4.98 | 4,158,399 |
| Two Letter U.S. State Abbreviations | 0 | - | 4.19 | 747,125 |
| Famous Canadians Quiz | 0 | - | 3.94 | 23,410 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,247 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,650 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,025 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,454 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,674 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,241 |
| Country Codes of Europe | 0 | - | 3.43 | 13,723 |
