| States of Germany | 0 | - | 4.96 | 151,083 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,504 |
| German Groups of Things | 0 | - | 4.46 | 38,381 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,802 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,198 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,743 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,754 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 211,038 |
| Word Chain - France | 0 | - | 4.38 | 42,676 |
| Regions of Italy | 0 | - | 4.92 | 75,210 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 48,183 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,178 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,734 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,787 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,728 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,085 |
| Departments of France | 0 | - | 4.93 | 53,303 |
| Famous Germans | 0 | - | 4.50 | 54,834 |
| Germany True or False? | 0 | - | 4.61 | 48,662 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,438 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,830 |
| England or Wales? | 0 | - | 4.94 | 45,491 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,851 |
| Official European Union Languages | 0 | - | 4.97 | 237,665 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,314 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,564 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,634 |
| Word Chain - Italy | 0 | - | 4.07 | 23,135 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,300 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,747 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,875 |
| Italian Foods | 0 | - | 4.31 | 72,454 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,667 |
| British Groups of Things | 0 | - | 4.25 | 82,778 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,994 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,316 |
| Celtic Nations | 0 | - | 4.69 | 46,873 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,133 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,776 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,323,508 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,080 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,121 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,104 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,322 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,474 |
| Regions of France | 0 | - | 4.77 | 119,968 |
| France Immigration by Country | 0 | - | 4.72 | 76,201 |
| Capitals of German States | 0 | - | 4.74 | 28,894 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,200 |
| History of Germany | 0 | - | 4.39 | 52,726 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,727 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,884 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,061 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,540 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,155 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,565 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,969 |
| Counties of England | 0 | - | 4.97 | 792,577 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,506 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,508 |
| Capital Cities Chain | 0 | - | 4.84 | 82,256 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,205 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,729 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,619 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,596 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,688 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,339 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,317 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,775 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,147 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,288 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,347 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,667 |
| Name a Valid English City | 0 | - | 4.19 | 16,673 |
| Champions League Winners | 0 | - | 4.92 | 1,000,707 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,782 |
| Word Chain - Australia | 0 | - | 4.37 | 38,076 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,294 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,423 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,875 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,440 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,618 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,775 |
| Name a Valid African Country | 0 | - | 4.98 | 153,429 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,761 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,524 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 258,722 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,910 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,706 |
| Germany Country Quiz | 0 | - | 4.82 | 157,183 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,561 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,870 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,842 |
| Italy Country Quiz | 0 | - | 4.82 | 122,679 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,836 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,460 |
| The Mafia Quiz | 0 | - | 4.46 | 23,252 |
| History of The Netherlands | 0 | - | 4.46 | 17,361 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,426 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,045 |
| Canary Islands | 0 | - | 4.61 | 17,438 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,432 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,411 |
| British Spellings | 0 | - | 4.06 | 99,356 |
| British to American Food Translation | 0 | - | 3.38 | 51,907 |
| British Acronyms | 0 | - | 4.39 | 45,703 |
| UK Immigration by Country | 0 | - | 4.94 | 140,360 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,965 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,864 |
| Geography of Scotland | 0 | - | 4.63 | 21,547 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,248 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,325 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,052 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,485 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,509 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,626 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,284 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,839 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,129 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,479 |
| Slavic Languages | 0 | - | 4.68 | 54,151 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,534 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,589 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,000 |
| France A-Z | 0 | - | 4.16 | 38,113 |
| French History Multiple Choice | 0 | - | 4.55 | 32,946 |
| Geography of Germany | 0 | - | 4.35 | 17,137 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,635 |
| Name that Greek Letter | 0 | - | 4.93 | 322,551 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,522 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,686 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,358 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,348 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,851 |
| Switzerland A-Z | 0 | - | 4.45 | 25,578 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,576 |
| Malta Country Quiz | 0 | - | 4.81 | 30,938 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 20,003 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,398 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,139 |
| Countries that Beat Canada | 0 | - | 4.90 | 87,121 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,574 |
| History of Russia Quiz | 0 | - | 4.49 | 31,844 |
| Word Chain - Russia | 0 | - | 4.33 | 15,723 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,641 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,249 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,157 |
| Famous French People | 0 | - | 4.12 | 28,138 |
| Movies Set in France | 0 | - | 4.26 | 13,097 |
| French Inventions | 0 | - | 4.08 | 13,876 |
| French Foods | 0 | - | 4.00 | 27,636 |
| History of Paris | 0 | - | 4.24 | 13,629 |
| The Trojan War | 0 | - | 4.83 | 39,567 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,168 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,079 |
| History of Italy | 0 | - | 4.55 | 31,898 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,441 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,067 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,288 |
| Roman Emperors | 0 | - | 4.95 | 119,244 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,567 |
| Famous Nordic People | 0 | - | 4.34 | 19,981 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,336 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,535 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,952 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,567 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,092 |
| Geography of Spain | 0 | - | 4.59 | 22,019 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,499 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,912 |
| People on Money - England | 0 | - | 4.29 | 16,590 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,506 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,161 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,491 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,904 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,015 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,684 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,136 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,111 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,991 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,445 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,327 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,031 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,807 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,441 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,610 |
| Europe Map Quiz | 0 | - | 5.00 | 4,745,970 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,799 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,240 |
| Capitals of French Regions | 0 | - | 4.45 | 16,019 |
| Kings of France Quiz | 0 | - | 4.20 | 32,631 |
| German Loan Words | 0 | - | 4.27 | 135,617 |
| Olympian Gods Quiz | 0 | - | 4.96 | 498,426 |
| Ancient Greek Words | 0 | - | 4.93 | 111,100 |
| Robin Hood Quiz | 0 | - | 4.00 | 8,430 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,358 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,062 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,137 |
| Famous Scottish People | 0 | - | 4.22 | 18,359 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,406 |
