| States of Germany | 0 | - | 4.95 | 152,698 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,079 |
| German Groups of Things | 0 | - | 4.46 | 38,483 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,691 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,367 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,028 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,066 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 213,680 |
| Word Chain - France | 0 | - | 4.38 | 42,786 |
| Regions of Italy | 0 | - | 4.92 | 75,937 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,215 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,028 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,242 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,385 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,927 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,198 |
| Departments of France | 0 | - | 4.93 | 54,180 |
| Famous Germans | 0 | - | 4.50 | 55,310 |
| Germany True or False? | 0 | - | 4.61 | 48,820 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,558 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,280 |
| England or Wales? | 0 | - | 4.94 | 45,713 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,166 |
| Official European Union Languages | 0 | - | 4.97 | 238,576 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,904 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,325 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,782 |
| Word Chain - Italy | 0 | - | 4.07 | 23,168 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,345 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,002 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,243 |
| Italian Foods | 0 | - | 4.30 | 72,803 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,852 |
| British Groups of Things | 0 | - | 4.25 | 82,878 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,039 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,389 |
| Celtic Nations | 0 | - | 4.69 | 46,954 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,288 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,957 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,329,066 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,238 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,245 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,395 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,689 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,039 |
| Regions of France | 0 | - | 4.72 | 120,879 |
| France Immigration by Country | 0 | - | 4.70 | 76,542 |
| Capitals of German States | 0 | - | 4.74 | 28,962 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,348 |
| History of Germany | 0 | - | 4.39 | 52,832 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,045 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,526 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,394 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,618 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,278 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,696 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,024 |
| Counties of England | 0 | - | 4.97 | 797,250 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,639 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 356,252 |
| Capital Cities Chain | 0 | - | 4.84 | 82,771 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,346 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,145 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,174 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,668 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,027 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,430 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,483 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,880 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,658 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,027 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,721 |
| Name a Valid English City | 0 | - | 4.19 | 16,731 |
| Champions League Winners | 0 | - | 4.92 | 1,007,177 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,339 |
| Word Chain - Australia | 0 | - | 4.38 | 38,146 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,506 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,145 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,052 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,710 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,399 |
| Name a Valid African Country | 0 | - | 4.98 | 154,128 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,560 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,686 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 261,188 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,763 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,702 |
| Famous French People | 0 | - | 4.07 | 35,621 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,812 |
| Germany Country Quiz | 0 | - | 4.83 | 157,909 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,389 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,010 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,919 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,443 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,092 |
| The Mafia Quiz | 0 | - | 4.46 | 23,329 |
| History of The Netherlands | 0 | - | 4.46 | 17,437 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,959 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,703 |
| Canary Islands | 0 | - | 4.62 | 17,483 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,038 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,726 |
| British Spellings | 0 | - | 4.06 | 99,463 |
| British to American Food Translation | 0 | - | 3.38 | 51,968 |
| British Acronyms | 0 | - | 4.40 | 45,804 |
| UK Immigration by Country | 0 | - | 4.94 | 140,943 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,862 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,667 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,829 |
| Geography of Scotland | 0 | - | 4.63 | 21,623 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,443 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,089 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,848 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,047 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,607 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,660 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,726 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,046 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,476 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,106 |
| Slavic Languages | 0 | - | 4.68 | 54,381 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,629 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,066 |
| France A-Z | 0 | - | 4.16 | 38,213 |
| French History Multiple Choice | 0 | - | 4.55 | 33,048 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,487 |
| Geography of Germany | 0 | - | 4.35 | 17,190 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 647,696 |
| Name that Greek Letter | 0 | - | 4.93 | 323,550 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,625 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,145 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,479 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,893 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,309 |
| Switzerland A-Z | 0 | - | 4.45 | 25,649 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,782 |
| Malta Country Quiz | 0 | - | 4.81 | 31,070 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 20,175 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,275 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,513 |
| Countries that Beat Canada | 0 | - | 4.91 | 97,784 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,128 |
| History of Russia Quiz | 0 | - | 4.47 | 31,923 |
| Word Chain - Russia | 0 | - | 4.33 | 15,761 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,738 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,845 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,235 |
| Movies Set in France | 0 | - | 4.26 | 13,121 |
| French Inventions | 0 | - | 4.08 | 13,899 |
| French Foods | 0 | - | 4.00 | 27,703 |
| History of Paris | 0 | - | 4.24 | 13,653 |
| The Trojan War | 0 | - | 4.83 | 39,739 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,905 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,073 |
| History of Italy | 0 | - | 4.55 | 31,980 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,807 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,106 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,550 |
| Roman Emperors | 0 | - | 4.95 | 120,103 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,666 |
| Famous Nordic People | 0 | - | 4.34 | 20,133 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,414 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,892 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,368 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,615 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,242 |
| Geography of Spain | 0 | - | 4.59 | 22,078 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,533 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,292 |
| People on Money - England | 0 | - | 4.29 | 16,616 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,238 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,964 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,970 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,195 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,381 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 119,550 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,100 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,728 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,598 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,756 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,613 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,916 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,766 |
| European Geography By Letter - V | 0 | - | 4.43 | 93,057 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,505 |
| Europe Map Quiz | 0 | - | 5.00 | 4,764,269 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,657 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,462 |
| Capitals of French Regions | 0 | - | 4.45 | 16,081 |
| Kings of France Quiz | 0 | - | 4.20 | 32,755 |
| German Loan Words | 0 | - | 4.27 | 135,813 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,011 |
| Ancient Greek Words | 0 | - | 4.93 | 111,650 |
| Robin Hood Quiz | 0 | - | 4.00 | 8,453 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,452 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,386 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,777 |
| Famous Scottish People | 0 | - | 4.22 | 18,399 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,513 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,567 |
