| States of Germany | 0 | - | 4.96 | 150,193 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,069 |
| German Groups of Things | 0 | - | 4.46 | 38,310 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,503 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,056 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,491 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,707 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,546 |
| Regions of Italy | 0 | - | 4.92 | 74,789 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,865 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,432 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,248 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,952 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,660 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,337 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,263 |
| Departments of France | 0 | - | 4.93 | 52,880 |
| Famous Germans | 0 | - | 4.50 | 54,646 |
| Germany True or False? | 0 | - | 4.61 | 48,540 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,381 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,018 |
| England or Wales? | 0 | - | 4.94 | 45,347 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,606 |
| Official European Union Languages | 0 | - | 4.97 | 236,974 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,730 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,395 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,530 |
| Word Chain - Germany | 0 | - | 4.31 | 22,479 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,558 |
| Word Chain - France | 0 | - | 4.38 | 42,587 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,629 |
| Italian Foods | 0 | - | 4.31 | 72,223 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,577 |
| British Groups of Things | 0 | - | 4.25 | 82,691 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,248 |
| Celtic Nations | 0 | - | 4.69 | 46,820 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,007 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,636 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,320,339 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,961 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,004 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,886 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,938 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,065 |
| Regions of France | 0 | - | 4.78 | 119,339 |
| France Immigration by Country | 0 | - | 4.72 | 75,988 |
| Capitals of German States | 0 | - | 4.74 | 28,816 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,107 |
| History of Germany | 0 | - | 4.39 | 52,624 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,484 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,571 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,854 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,478 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,069 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,454 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,926 |
| Counties of England | 0 | - | 4.97 | 789,621 |
| The UK for Americans - True or False | 0 | - | 4.46 | 58,408 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,216 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,015 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,380 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,360 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,267 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,299 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,854 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,118 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,266 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,773 |
| Word Chain - Italy | 0 | - | 4.07 | 23,093 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,277 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,059 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,165 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,244 |
| Name a Valid English City | 0 | - | 4.19 | 16,633 |
| Champions League Winners | 0 | - | 4.92 | 996,890 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,411 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,168 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,389 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,719 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,246 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,529 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,140 |
| Name a Valid African Country | 0 | - | 4.98 | 152,994 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,234 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,413 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,990 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,312 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,269 |
| Germany Country Quiz | 0 | - | 4.82 | 156,635 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,201 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,787 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,776 |
| Italy Country Quiz | 0 | - | 4.82 | 122,282 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,451 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,134 |
| The Mafia Quiz | 0 | - | 4.46 | 23,212 |
| History of The Netherlands | 0 | - | 4.46 | 17,320 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,119 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,705 |
| Canary Islands | 0 | - | 4.61 | 17,407 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,991 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,180 |
| British Spellings | 0 | - | 4.07 | 99,251 |
| British to American Food Translation | 0 | - | 3.38 | 51,853 |
| British Acronyms | 0 | - | 4.39 | 45,629 |
| UK Immigration by Country | 0 | - | 4.94 | 139,726 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,276 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,377 |
| Geography of Scotland | 0 | - | 4.63 | 21,491 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,573 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,769 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,614 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,097 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,455 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,605 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,023 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,133 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,864 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,014 |
| Slavic Languages | 0 | - | 4.67 | 54,004 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,420 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,558 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,965 |
| France A-Z | 0 | - | 4.16 | 38,065 |
| French History Multiple Choice | 0 | - | 4.55 | 32,882 |
| Geography of Germany | 0 | - | 4.35 | 17,091 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,230 |
| Name that Greek Letter | 0 | - | 4.94 | 321,771 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,437 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,410 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,260 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,557 |
| Switzerland A-Z | 0 | - | 4.45 | 25,512 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,461 |
| Malta Country Quiz | 0 | - | 4.81 | 30,843 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 19,898 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,624 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,644 |
| Countries that Beat Canada | 0 | - | 4.90 | 86,884 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,182 |
| History of Russia Quiz | 0 | - | 4.49 | 31,798 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,581 |
| Countries that Beat Russia | 0 | - | 4.84 | 81,936 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,102 |
| Famous French People | 0 | - | 4.12 | 27,966 |
| Movies Set in France | 0 | - | 4.26 | 13,077 |
| French Inventions | 0 | - | 4.08 | 13,866 |
| French Foods | 0 | - | 4.00 | 27,597 |
| History of Paris | 0 | - | 4.24 | 13,617 |
| The Trojan War | 0 | - | 4.83 | 39,453 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,621 |
| 101 Figures from Greek Mythology | 0 | - | 5.00 | 124,386 |
| History of Italy | 0 | - | 4.55 | 31,829 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,197 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,046 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,080 |
| Roman Emperors | 0 | - | 4.95 | 118,552 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,491 |
| Famous Nordic People | 0 | - | 4.34 | 19,871 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,288 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,370 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,708 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,547 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,990 |
| Geography of Spain | 0 | - | 4.59 | 21,971 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,473 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,815 |
| People on Money - England | 0 | - | 4.29 | 16,566 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,345 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,174 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,219 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,813 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 26,885 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,429 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,933 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,877 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,741 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,248 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,949 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,696 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,654 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,041 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,338 |
| Europe Map Quiz | 0 | - | 5.00 | 4,732,880 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,616 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,171 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,629 |
| Capitals of French Regions | 0 | - | 4.45 | 15,988 |
| Kings of France Quiz | 0 | - | 4.20 | 32,568 |
| German Loan Words | 0 | - | 4.27 | 135,472 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,554 |
| Ancient Greek Words | 0 | - | 4.92 | 110,739 |
| Robin Hood Quiz | 0 | - | 4.00 | 8,418 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,277 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,191 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,393 |
| Famous Scottish People | 0 | - | 4.22 | 18,331 |
| Asia Geography Quiz #1 | 0 | - | 4.78 | 53,333 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,340 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,160 |
