| Regions of Italy | 0 | - | 4.92 | 75,828 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,540 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,341 |
| States of Germany | 0 | - | 4.96 | 152,416 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,001 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,113 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,903 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,176 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 213,115 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,455 |
| Departments of France | 0 | - | 4.93 | 54,053 |
| England or Wales? | 0 | - | 4.94 | 45,670 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,101 |
| Official European Union Languages | 0 | - | 4.97 | 238,435 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,802 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,070 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 647,136 |
| Name that Greek Letter | 0 | - | 4.93 | 323,371 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,604 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,507 |
| Roman Emperors | 0 | - | 4.95 | 119,974 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,967 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,034 |
| Italian Foods | 0 | - | 4.30 | 72,759 |
| History of Italy | 0 | - | 4.55 | 31,968 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,760 |
| The Mafia Quiz | 0 | - | 4.46 | 23,316 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,825 |
| Top African Languages on a Map | 0 | - | 4.92 | 73,944 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,598 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,344 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,406 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 171,532 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,336 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,979 |
| Counties of England | 0 | - | 4.97 | 796,292 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 355,669 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,392 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,382 |
| Celtic Nations | 0 | - | 4.69 | 46,933 |
| Regions of France | 0 | - | 4.72 | 120,714 |
| France Immigration by Country | 0 | - | 4.70 | 76,489 |
| Famous Germans | 0 | - | 4.50 | 55,274 |
| German Groups of Things | 0 | - | 4.46 | 38,472 |
| Germany True or False? | 0 | - | 4.61 | 48,786 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,987 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,935 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,112 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,329 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,259 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,423 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,210 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,619 |
| Champions League Winners | 0 | - | 4.92 | 1,006,166 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,079 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 78,381 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 80,924 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,033 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,364 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,752 |
| Word Chain - Italy | 0 | - | 4.07 | 23,162 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,100 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,113 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,887 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,967 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,566 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,018 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,691 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.85 | 66,198 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,479 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,131 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,738 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,041 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,670 |
| Famous French People | 0 | - | 4.06 | 35,527 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,696 |
| Word Chain - France | 0 | - | 4.38 | 42,771 |
| Germany Country Quiz | 0 | - | 4.82 | 157,794 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,289 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,983 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,908 |
| Italy Country Quiz | 0 | - | 4.82 | 123,367 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,308 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,990 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,315 |
| History of The Netherlands | 0 | - | 4.46 | 17,429 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,895 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,607 |
| Canary Islands | 0 | - | 4.62 | 17,475 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,943 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,689 |
| British Spellings | 0 | - | 4.06 | 99,445 |
| British Groups of Things | 0 | - | 4.25 | 82,862 |
| British Acronyms | 0 | - | 4.40 | 45,791 |
| UK Immigration by Country | 0 | - | 4.94 | 140,856 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,034 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,710 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,529 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,760 |
| Geography of Scotland | 0 | - | 4.63 | 21,613 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,266 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 80,049 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,595 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,654 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,665 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,881 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,421 |
| Slavic Languages | 0 | - | 4.68 | 54,347 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 100,711 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,762 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,624 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,057 |
| France A-Z | 0 | - | 4.16 | 38,197 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,166 |
| French History Multiple Choice | 0 | - | 4.55 | 33,030 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,015 |
| History of Germany | 0 | - | 4.39 | 52,810 |
| The Trojan War | 0 | - | 4.83 | 39,712 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,779 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,731 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,914 |
| Roman Names for Places | 0 | - | 4.62 | 58,267 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,456 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,607 |
| Languages of Spain | 0 | - | 4.36 | 23,313 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,247 |
| Switzerland A-Z | 0 | - | 4.45 | 25,640 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,674 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,018 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,752 |
| Malta Country Quiz | 0 | - | 4.81 | 31,044 |
| History of Russia Quiz | 0 | - | 4.47 | 31,913 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,720 |
| Movies Set in France | 0 | - | 4.26 | 13,118 |
| French Inventions | 0 | - | 4.08 | 13,897 |
| History of Paris | 0 | - | 4.24 | 13,645 |
| Word Chain - Germany | 0 | - | 4.31 | 22,583 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,607 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,881 |
| Italian Inventions | 0 | - | 3.81 | 18,438 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,651 |
| Famous Nordic People | 0 | - | 4.34 | 20,103 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,614 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,219 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,339 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,526 |
| People on Money - England | 0 | - | 4.29 | 16,610 |
| Name a Valid English City | 0 | - | 4.19 | 16,719 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,136 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,056 |
| European Geography By Letter - B #1 | 0 | - | 4.64 | 117,454 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,787 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,465 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,408 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,510 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,466 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,772 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,638 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,958 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,368 |
| Europe Map Quiz | 0 | - | 5.00 | 4,761,443 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,261 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,926 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,207 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,227 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,547 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.74 | 65,704 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,419 |
| Capitals of French Regions | 0 | - | 4.45 | 16,065 |
| Kings of France Quiz | 0 | - | 4.20 | 32,734 |
| Capitals of German States | 0 | - | 4.74 | 28,948 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,325 |
| Ancient Greek Words | 0 | - | 4.93 | 111,544 |
| Serie A Champions | 0 | - | 4.29 | 58,247 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,082 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,179 |
| British to American Food Translation | 0 | - | 3.38 | 51,961 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,439 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,649 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,100 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,650 |
| Famous Scottish People | 0 | - | 4.22 | 18,392 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,060 |
| Africa Map Quiz | 0 | - | 5.00 | 2,117,298 |
| Oceania Map Quiz | 0 | - | 4.98 | 641,923 |
| Australian Capitals | 0 | - | 4.92 | 62,718 |
| European Physical Geography | 0 | - | 4.26 | 33,500 |
| Geography of Russia | 0 | - | 4.57 | 21,524 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,949 |
| History of Austria | 0 | - | 4.70 | 17,859 |
| Austria Country Quiz | 0 | - | 4.57 | 59,717 |
| Belgium Country Quiz | 0 | - | 4.73 | 71,774 |
| France Country Quiz | 0 | - | 4.70 | 134,935 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,147 |
| Geography of the French Empire | 0 | - | 4.45 | 27,055 |
| The French Revolution | 0 | - | 4.46 | 23,927 |
| France Multiple Choice | 0 | - | 4.39 | 40,733 |
| Tour de France Winners | 0 | - | 4.27 | 15,364 |
| History of France | 0 | - | 4.59 | 56,945 |
| Greece Country Quiz | 0 | - | 4.74 | 66,233 |
