| States of Germany | 0 | - | 4.95 | 154,660 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,731 |
| German Groups of Things | 0 | - | 4.47 | 38,645 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,668 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,710 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,475 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,583 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,964 |
| Word Chain - France | 0 | - | 4.38 | 42,948 |
| Regions of Italy | 0 | - | 4.92 | 77,145 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,828 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,413 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,797 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,012 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,019 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,028 |
| Departments of France | 0 | - | 4.93 | 55,238 |
| Famous Germans | 0 | - | 4.50 | 55,813 |
| Germany True or False? | 0 | - | 4.61 | 49,033 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,753 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,860 |
| England or Wales? | 0 | - | 4.94 | 45,985 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,778 |
| Official European Union Languages | 0 | - | 4.97 | 239,882 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,709 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,075 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,106 |
| Word Chain - Italy | 0 | - | 4.07 | 23,225 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,417 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,338 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,732 |
| Italian Foods | 0 | - | 4.30 | 73,306 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,065 |
| British Groups of Things | 0 | - | 4.26 | 83,027 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,117 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,513 |
| Celtic Nations | 0 | - | 4.61 | 47,107 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,539 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,204 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,336,264 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,474 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,438 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,060 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,901 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,059 |
| Regions of France | 0 | - | 4.70 | 122,190 |
| France Immigration by Country | 0 | - | 4.70 | 76,957 |
| Capitals of German States | 0 | - | 4.74 | 29,076 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,553 |
| History of Germany | 0 | - | 4.39 | 52,982 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,516 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,445 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,816 |
| Most Common First Names in Spain | 0 | - | 4.33 | 55,315 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,416 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,990 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,093 |
| Counties of England | 0 | - | 4.97 | 803,375 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,824 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 361,994 |
| Capital Cities Chain | 0 | - | 4.84 | 83,432 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,700 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,029 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,809 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,951 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,027 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,639 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,702 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,859 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,569 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,562 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,125 |
| Name a Valid English City | 0 | - | 4.19 | 16,832 |
| Champions League Winners | 0 | - | 4.92 | 1,016,728 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 136,156 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,591 |
| Word Chain - Australia | 0 | - | 4.38 | 38,250 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,767 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,564 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,402 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,391 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,844 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,607 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,906 |
| European Geographic Groups of Four | 0 | - | 4.56 | 20,296 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 264,841 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,955 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,954 |
| Famous French People | 0 | - | 4.05 | 36,123 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,864 |
| Germany Country Quiz | 0 | - | 4.82 | 158,906 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,124 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,250 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,053 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,284 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,091 |
| The Mafia Quiz | 0 | - | 4.46 | 23,442 |
| History of The Netherlands | 0 | - | 4.46 | 17,558 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,534 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,928 |
| Canary Islands | 0 | - | 4.62 | 17,544 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,989 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,094 |
| British Spellings | 0 | - | 4.06 | 99,613 |
| British to American Food Translation | 0 | - | 3.38 | 52,055 |
| British Acronyms | 0 | - | 4.40 | 45,949 |
| UK Immigration by Country | 0 | - | 4.94 | 141,775 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 141,101 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,856 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,157 |
| Geography of Scotland | 0 | - | 4.63 | 21,749 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,254 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 111,416 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,784 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,839 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 93,483 |
| Name a Valid African Country | 0 | - | 4.98 | 155,110 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,755 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,724 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,366 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 122,753 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,983 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,143 |
| Random Point on Land to European Country | 0 | - | 4.94 | 78,097 |
| Slavic Languages | 0 | - | 4.67 | 54,716 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,673 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,149 |
| France A-Z | 0 | - | 4.16 | 38,347 |
| French History Multiple Choice | 0 | - | 4.55 | 33,249 |
| Geography of Germany | 0 | - | 4.35 | 17,293 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,274 |
| Name that Greek Letter | 0 | - | 4.93 | 325,082 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,747 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,707 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,639 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,433 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,911 |
| Switzerland A-Z | 0 | - | 4.45 | 25,774 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,107 |
| Malta Country Quiz | 0 | - | 4.81 | 31,243 |
| Topological Map of Asia Quiz | 0 | - | 4.82 | 20,465 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,734 |
| Countries that Beat Canada | 0 | - | 4.90 | 99,039 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,894 |
| History of Russia Quiz | 0 | - | 4.47 | 32,009 |
| Word Chain - Russia | 0 | - | 4.33 | 15,798 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,882 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,650 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,353 |
| Movies Set in France | 0 | - | 4.26 | 13,153 |
| French Inventions | 0 | - | 4.10 | 13,929 |
| French Foods | 0 | - | 4.00 | 27,778 |
| History of Paris | 0 | - | 4.24 | 13,682 |
| The Trojan War | 0 | - | 4.83 | 40,008 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,029 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,652 |
| History of Italy | 0 | - | 4.55 | 32,160 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,415 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,168 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,618 |
| Roman Emperors | 0 | - | 4.95 | 121,280 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,830 |
| Famous Nordic People | 0 | - | 4.34 | 20,315 |
| Most Common Last Names in Sweden | 0 | - | 4.50 | 15,488 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,252 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,909 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,645 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,435 |
| Geography of Spain | 0 | - | 4.59 | 22,190 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,580 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,508 |
| People on Money - England | 0 | - | 4.29 | 16,647 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,812 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 56,506 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,481 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,433 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,279 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,675 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,138 |
| European Geography By Letter - D | 0 | - | 4.49 | 118,288 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,202 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,682 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,231 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,846 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,129 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,719 |
| Europe Map Quiz | 0 | - | 5.00 | 4,789,823 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,524 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,562 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,754 |
| Capitals of French Regions | 0 | - | 4.45 | 16,185 |
| Kings of France Quiz | 0 | - | 4.21 | 32,937 |
| German Loan Words | 0 | - | 4.27 | 141,045 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,942 |
| Ancient Greek Words | 0 | - | 4.93 | 112,536 |
| Robin Hood Quiz | 0 | - | 4.00 | 8,481 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,578 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,441 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,855 |
| Famous Scottish People | 0 | - | 4.22 | 18,442 |
