| States of Germany | 0 | - | 4.96 | 151,516 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,760 |
| German Groups of Things | 0 | - | 4.46 | 38,407 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,287 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,248 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 31,824 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,846 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 211,591 |
| Regions of Italy | 0 | - | 4.92 | 75,388 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,414 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,427 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,894 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,226 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,022 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,408 |
| Departments of France | 0 | - | 4.93 | 53,564 |
| Famous Germans | 0 | - | 4.50 | 54,960 |
| Germany True or False? | 0 | - | 4.61 | 48,696 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,484 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,967 |
| England or Wales? | 0 | - | 4.94 | 45,547 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,927 |
| Official European Union Languages | 0 | - | 4.97 | 237,916 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,482 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,042 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,686 |
| Word Chain - Germany | 0 | - | 4.31 | 22,550 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,817 |
| Word Chain - France | 0 | - | 4.38 | 42,712 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,975 |
| Italian Foods | 0 | - | 4.30 | 72,555 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,707 |
| British Groups of Things | 0 | - | 4.25 | 82,814 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,007 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,344 |
| Celtic Nations | 0 | - | 4.69 | 46,888 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,175 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,831 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,324,869 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,115 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,152 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,176 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,711 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 169,984 |
| Regions of France | 0 | - | 4.75 | 120,199 |
| France Immigration by Country | 0 | - | 4.70 | 76,317 |
| Capitals of German States | 0 | - | 4.74 | 28,911 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,249 |
| History of Germany | 0 | - | 4.39 | 52,751 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,801 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,047 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,154 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,556 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,187 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,610 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,985 |
| Counties of England | 0 | - | 4.97 | 793,770 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,549 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 353,441 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,236 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,833 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 96,805 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,736 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 77,026 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,538 |
| Federal Subjects of Russia | 0 | - | 4.95 | 145,847 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,976 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,384 |
| Word Chain - Italy | 0 | - | 4.07 | 23,145 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,737 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,462 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,881 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,318 |
| Name a Valid English City | 0 | - | 4.19 | 16,691 |
| Champions League Winners | 0 | - | 4.92 | 1,002,424 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,936 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,354 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,450 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,972 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,507 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,645 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,948 |
| Name a Valid African Country | 0 | - | 4.98 | 153,606 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,002 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,577 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 259,427 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,147 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,231 |
| Germany Country Quiz | 0 | - | 4.82 | 157,392 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,767 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,898 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,862 |
| Italy Country Quiz | 0 | - | 4.82 | 122,848 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,971 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,684 |
| The Mafia Quiz | 0 | - | 4.46 | 23,269 |
| History of The Netherlands | 0 | - | 4.46 | 17,386 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,568 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,218 |
| Canary Islands | 0 | - | 4.62 | 17,453 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,579 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,527 |
| British Spellings | 0 | - | 4.06 | 99,379 |
| British to American Food Translation | 0 | - | 3.38 | 51,925 |
| British Acronyms | 0 | - | 4.39 | 45,730 |
| UK Immigration by Country | 0 | - | 4.94 | 140,529 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,203 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,061 |
| Geography of Scotland | 0 | - | 4.63 | 21,573 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,518 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,518 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,210 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,623 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,536 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,639 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,416 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,123 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,245 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,642 |
| Slavic Languages | 0 | - | 4.68 | 54,215 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,577 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,601 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,021 |
| France A-Z | 0 | - | 4.16 | 38,137 |
| French History Multiple Choice | 0 | - | 4.55 | 32,978 |
| Geography of Germany | 0 | - | 4.35 | 17,148 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,420 |
| Name that Greek Letter | 0 | - | 4.93 | 322,859 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,553 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,831 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,396 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,984 |
| Switzerland A-Z | 0 | - | 4.45 | 25,601 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,637 |
| Malta Country Quiz | 0 | - | 4.81 | 30,971 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 20,043 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,654 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,371 |
| Countries that Beat Canada | 0 | - | 4.90 | 87,206 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,742 |
| History of Russia Quiz | 0 | - | 4.49 | 31,865 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,673 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,372 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,176 |
| Famous French People | 0 | - | 4.12 | 30,296 |
| Movies Set in France | 0 | - | 4.26 | 13,107 |
| French Inventions | 0 | - | 4.08 | 13,885 |
| French Foods | 0 | - | 4.00 | 27,654 |
| History of Paris | 0 | - | 4.24 | 13,633 |
| The Trojan War | 0 | - | 4.83 | 39,614 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,379 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,310 |
| History of Italy | 0 | - | 4.55 | 31,920 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,563 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,078 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,359 |
| Roman Emperors | 0 | - | 4.95 | 119,507 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,598 |
| Famous Nordic People | 0 | - | 4.34 | 20,022 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,363 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,613 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,051 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,584 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,140 |
| Geography of Spain | 0 | - | 4.59 | 22,036 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,509 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,977 |
| People on Money - England | 0 | - | 4.29 | 16,597 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,594 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,444 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,601 |
| Solve the Secret Capital City | 0 | - | 4.80 | 163,300 |
| Add A Letter - Make a Capital City | 0 | - | 4.46 | 32,386 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,919 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,063 |
| European Geography By Letter - A | 0 | - | 4.61 | 136,853 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,550 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,422 |
| European Geography By Letter - D | 0 | - | 4.50 | 107,267 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,638 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,572 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,176 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,928 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,539 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,773 |
| Europe Map Quiz | 0 | - | 5.00 | 4,750,695 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,956 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,316 |
| Capitals of French Regions | 0 | - | 4.45 | 16,030 |
| Kings of France Quiz | 0 | - | 4.20 | 32,658 |
| German Loan Words | 0 | - | 4.27 | 135,679 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,072 |
| Ancient Greek Words | 0 | - | 4.93 | 111,227 |
| Robin Hood Quiz | 0 | - | 4.00 | 8,438 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,382 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,356 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,323 |
| Famous Scottish People | 0 | - | 4.22 | 18,374 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,446 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,473 |
