| States of Germany | 0 | - | 4.95 | 153,501 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,356 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,905 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,518 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,246 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,266 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,953 |
| Regions of Italy | 0 | - | 4.92 | 76,404 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,507 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,627 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,468 |
| British Groups of Things | 0 | - | 4.25 | 82,926 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,429 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,658 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,925 |
| Departments of France | 0 | - | 4.93 | 54,596 |
| Famous Germans | 0 | - | 4.50 | 55,562 |
| Germany True or False? | 0 | - | 4.61 | 48,916 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,634 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,504 |
| England or Wales? | 0 | - | 4.94 | 45,824 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,389 |
| Official European Union Languages | 0 | - | 4.97 | 239,062 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,227 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,453 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,902 |
| Word Chain - Germany | 0 | - | 4.31 | 22,638 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,145 |
| European Geographic Groups of Four | 0 | - | 4.57 | 15,925 |
| Word Chain - France | 0 | - | 4.38 | 42,864 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,422 |
| Italian Foods | 0 | - | 4.30 | 73,002 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,937 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,063 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,444 |
| Celtic Nations | 0 | - | 4.69 | 47,008 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,385 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,044 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,331,663 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,339 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,317 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,700 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,616 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,790 |
| Regions of France | 0 | - | 4.70 | 121,391 |
| France Immigration by Country | 0 | - | 4.70 | 76,714 |
| Capitals of German States | 0 | - | 4.74 | 29,002 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,417 |
| History of Germany | 0 | - | 4.39 | 52,912 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,191 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,896 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,539 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,674 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,363 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,797 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,055 |
| Counties of England | 0 | - | 4.97 | 799,715 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,714 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,712 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,340 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,173 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,458 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,431 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,433 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,244 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,956 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,308 |
| Word Chain - Italy | 0 | - | 4.07 | 23,196 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,425 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,227 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,341 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,369 |
| Name a Valid English City | 0 | - | 4.19 | 16,764 |
| Champions League Winners | 0 | - | 4.92 | 1,010,764 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,642 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,436 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,625 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,243 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,203 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,770 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,977 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,771 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 262,709 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,224 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,809 |
| Famous French People | 0 | - | 4.07 | 35,908 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,275 |
| Germany Country Quiz | 0 | - | 4.83 | 158,303 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,732 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,110 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,968 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,784 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,694 |
| The Mafia Quiz | 0 | - | 4.46 | 23,390 |
| History of The Netherlands | 0 | - | 4.46 | 17,499 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,169 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,330 |
| Canary Islands | 0 | - | 4.62 | 17,499 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,360 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,862 |
| British Spellings | 0 | - | 4.06 | 99,526 |
| British to American Food Translation | 0 | - | 3.38 | 51,991 |
| British Acronyms | 0 | - | 4.40 | 45,868 |
| UK Immigration by Country | 0 | - | 4.94 | 141,238 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,327 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,134 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,987 |
| Geography of Scotland | 0 | - | 4.63 | 21,676 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,192 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,469 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,207 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,335 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,704 |
| Name a Valid African Country | 0 | - | 4.98 | 154,490 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.84 | 69,114 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,760 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,665 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,678 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,941 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,813 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,684 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,505 |
| Slavic Languages | 0 | - | 4.68 | 54,509 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,648 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,098 |
| France A-Z | 0 | - | 4.16 | 38,279 |
| French History Multiple Choice | 0 | - | 4.55 | 33,143 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,517 |
| Geography of Germany | 0 | - | 4.35 | 17,216 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,546 |
| Name that Greek Letter | 0 | - | 4.93 | 324,316 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,679 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,360 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,527 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,129 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,575 |
| Switzerland A-Z | 0 | - | 4.45 | 25,699 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,899 |
| Malta Country Quiz | 0 | - | 4.81 | 31,135 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 20,267 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,939 |
| California Groups of Things | 0 | - | 4.25 | 45,589 |
| New York Groups of Things | 0 | - | 4.35 | 67,603 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,525 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,607 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,438 |
| History of Russia Quiz | 0 | - | 4.47 | 31,968 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,792 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,146 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,278 |
| Movies Set in France | 0 | - | 4.26 | 13,135 |
| French Inventions | 0 | - | 4.10 | 13,911 |
| French Foods | 0 | - | 4.00 | 27,735 |
| History of Paris | 0 | - | 4.24 | 13,665 |
| The Trojan War | 0 | - | 4.83 | 39,837 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,372 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,689 |
| History of Italy | 0 | - | 4.55 | 32,081 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,040 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,135 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,900 |
| Roman Emperors | 0 | - | 4.95 | 120,511 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,744 |
| Famous Nordic People | 0 | - | 4.34 | 20,194 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,438 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,017 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,580 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,625 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,318 |
| Geography of Spain | 0 | - | 4.59 | 22,117 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,548 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,371 |
| People on Money - England | 0 | - | 4.29 | 16,627 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,852 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 56,157 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,738 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,285 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,086 |
| European Geography By Letter - B #1 | 0 | - | 4.69 | 120,486 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,877 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,425 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,091 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,460 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,274 |
| European Geography By Letter - R | 0 | - | 4.42 | 94,091 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,344 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,926 |
| Europe Map Quiz | 0 | - | 5.00 | 4,774,072 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,953 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,578 |
| Capitals of French Regions | 0 | - | 4.45 | 16,121 |
| Kings of France Quiz | 0 | - | 4.20 | 32,840 |
| German Loan Words | 0 | - | 4.28 | 139,559 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,200 |
| Ancient Greek Words | 0 | - | 4.93 | 112,024 |
| Robin Hood Quiz | 0 | - | 4.00 | 8,469 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,501 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,295 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,176 |
| Famous Scottish People | 0 | - | 4.22 | 18,417 |
