| States of Germany | 0 | - | 4.95 | 154,139 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,585 |
| German Groups of Things | 0 | - | 4.47 | 38,608 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,979 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,642 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,372 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,473 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,108 |
| Regions of Italy | 0 | - | 4.92 | 76,789 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,693 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,113 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,655 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,299 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,583 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,553 |
| Departments of France | 0 | - | 4.93 | 54,926 |
| Famous Germans | 0 | - | 4.50 | 55,713 |
| Germany True or False? | 0 | - | 4.61 | 48,979 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,714 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,692 |
| England or Wales? | 0 | - | 4.94 | 45,911 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,609 |
| Official European Union Languages | 0 | - | 4.97 | 239,527 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,511 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,397 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,026 |
| Word Chain - Germany | 0 | - | 4.31 | 22,666 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,250 |
| Word Chain - France | 0 | - | 4.38 | 42,908 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,612 |
| Italian Foods | 0 | - | 4.30 | 73,172 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,015 |
| British Groups of Things | 0 | - | 4.25 | 82,982 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,090 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,481 |
| Celtic Nations | 0 | - | 4.61 | 47,072 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,463 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,124 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,334,178 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,415 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,385 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,923 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,323 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,186 |
| Regions of France | 0 | - | 4.70 | 121,848 |
| France Immigration by Country | 0 | - | 4.70 | 76,854 |
| Capitals of German States | 0 | - | 4.74 | 29,046 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,511 |
| History of Germany | 0 | - | 4.39 | 52,957 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,368 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,261 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,661 |
| Most Common First Names in Spain | 0 | - | 4.32 | 55,008 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,387 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,924 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,077 |
| Counties of England | 0 | - | 4.97 | 801,707 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,777 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,510 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,551 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,605 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,656 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,355 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,790 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,105 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,430 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,634 |
| Word Chain - Italy | 0 | - | 4.07 | 23,209 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,073 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,416 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,747 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,391 |
| Name a Valid English City | 0 | - | 4.19 | 16,802 |
| Champions League Winners | 0 | - | 4.92 | 1,014,110 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,951 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,522 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,710 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,548 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,329 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,297 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,816 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,356 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,842 |
| European Geographic Groups of Four | 0 | - | 4.54 | 19,816 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,992 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,688 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,888 |
| Famous French People | 0 | - | 4.07 | 36,028 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,605 |
| Germany Country Quiz | 0 | - | 4.82 | 158,650 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,952 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,192 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,014 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,079 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,910 |
| The Mafia Quiz | 0 | - | 4.46 | 23,417 |
| History of The Netherlands | 0 | - | 4.46 | 17,532 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,366 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,681 |
| Canary Islands | 0 | - | 4.62 | 17,514 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,670 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,997 |
| British Spellings | 0 | - | 4.06 | 99,574 |
| British to American Food Translation | 0 | - | 3.38 | 52,022 |
| British Acronyms | 0 | - | 4.40 | 45,910 |
| UK Immigration by Country | 0 | - | 4.94 | 141,533 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,763 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,543 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,068 |
| Geography of Scotland | 0 | - | 4.63 | 21,713 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,767 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,865 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,506 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,638 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 93,010 |
| Name a Valid African Country | 0 | - | 4.98 | 154,864 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,712 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,709 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,182 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,390 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,829 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,872 |
| Slavic Languages | 0 | - | 4.67 | 54,635 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,662 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,125 |
| France A-Z | 0 | - | 4.16 | 38,316 |
| French History Multiple Choice | 0 | - | 4.55 | 33,194 |
| Geography of Germany | 0 | - | 4.35 | 17,253 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 651,002 |
| Name that Greek Letter | 0 | - | 4.93 | 324,758 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,715 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,550 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,599 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,767 |
| Switzerland A-Z | 0 | - | 4.45 | 25,750 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,027 |
| Malta Country Quiz | 0 | - | 4.81 | 31,211 |
| Topological Map of Asia Quiz | 0 | - | 4.82 | 20,383 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,421 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,867 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,693 |
| History of Russia Quiz | 0 | - | 4.47 | 31,990 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,840 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,446 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,317 |
| Movies Set in France | 0 | - | 4.26 | 13,145 |
| French Inventions | 0 | - | 4.10 | 13,919 |
| French Foods | 0 | - | 4.00 | 27,760 |
| History of Paris | 0 | - | 4.24 | 13,671 |
| The Trojan War | 0 | - | 4.83 | 39,944 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,757 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,239 |
| History of Italy | 0 | - | 4.55 | 32,118 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,239 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,155 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,515 |
| Roman Emperors | 0 | - | 4.95 | 120,982 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,791 |
| Famous Nordic People | 0 | - | 4.34 | 20,263 |
| Most Common Last Names in Sweden | 0 | - | 4.50 | 15,471 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,158 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,766 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,636 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,401 |
| Geography of Spain | 0 | - | 4.59 | 22,161 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,569 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,451 |
| People on Money - England | 0 | - | 4.29 | 16,638 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,400 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 56,378 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,120 |
| Solve the Secret Capital City | 0 | - | 4.80 | 164,446 |
| Add A Letter - Make a Capital City | 0 | - | 4.46 | 32,469 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,354 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,719 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,095 |
| European Geography By Letter - C | 0 | - | 4.43 | 123,196 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,106 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,756 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,114 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,878 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,393 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,611 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,322 |
| Europe Map Quiz | 0 | - | 5.00 | 4,782,355 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,228 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,462 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,674 |
| Capitals of French Regions | 0 | - | 4.45 | 16,159 |
| Kings of France Quiz | 0 | - | 4.20 | 32,890 |
| German Loan Words | 0 | - | 4.27 | 140,689 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,201 |
| Ancient Greek Words | 0 | - | 4.93 | 112,299 |
| Robin Hood Quiz | 0 | - | 4.00 | 8,477 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,547 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,993 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,636 |
| Famous Scottish People | 0 | - | 4.22 | 18,431 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,631 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,701 |
