| Netherlands Immigration by Country | 0 | - | 4.93 | 52,448 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,547 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,692 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 97,964 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 86,973 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,343 |
| States of Germany | 0 | - | 4.95 | 153,263 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,303 |
| Regions of Italy | 0 | - | 4.92 | 76,287 |
| History of The Netherlands | 0 | - | 4.46 | 17,488 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,448 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,426 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,677 |
| Famous Germans | 0 | - | 4.50 | 55,541 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,832 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,507 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,091 |
| Departments of France | 0 | - | 4.93 | 54,500 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,620 |
| England or Wales? | 0 | - | 4.94 | 45,806 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,343 |
| Official European Union Languages | 0 | - | 4.97 | 238,963 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,156 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,141 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,320 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,167 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,651 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,120 |
| Famous French People | 0 | - | 4.07 | 35,867 |
| The Mafia Quiz | 0 | - | 4.46 | 23,374 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,723 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,920 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,962 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,406 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,282 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,646 |
| France A-Z | 0 | - | 4.16 | 38,270 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,485 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,209 |
| Switzerland A-Z | 0 | - | 4.45 | 25,693 |
| Counties of England | 0 | - | 4.97 | 799,097 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,313 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,433 |
| Celtic Nations | 0 | - | 4.69 | 47,001 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,009 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 120,401 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,800 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,352 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,021 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,349 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,220 |
| European Geography By Letter - R | 0 | - | 4.42 | 94,029 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,298 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,859 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,902 |
| Regions of France | 0 | - | 4.72 | 121,277 |
| France Immigration by Country | 0 | - | 4.70 | 76,694 |
| German Groups of Things | 0 | - | 4.46 | 38,529 |
| Germany True or False? | 0 | - | 4.61 | 48,895 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,153 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,344 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,239 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,460 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,694 |
| Champions League Winners | 0 | - | 4.92 | 1,010,108 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,768 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,408 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,068 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,885 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,243 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,666 |
| Famous Nordic People | 0 | - | 4.34 | 20,176 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,218 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,624 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,173 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,222 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,546 |
| People on Money - England | 0 | - | 4.29 | 16,625 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,758 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,733 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,282 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,630 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,481 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,166 |
| European Geography By Letter - I | 0 | - | 4.09 | 95,909 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,548 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,027 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,158 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,456 |
| European Geography A-Z | 0 | - | 4.29 | 49,369 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,591 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,974 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,415 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,685 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,788 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,200 |
| Word Chain - France | 0 | - | 4.38 | 42,849 |
| Germany Country Quiz | 0 | - | 4.83 | 158,201 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,660 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,083 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,950 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,687 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,634 |
| Italian Foods | 0 | - | 4.30 | 72,954 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,132 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,255 |
| Canary Islands | 0 | - | 4.62 | 17,494 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,287 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,836 |
| British Spellings | 0 | - | 4.06 | 99,511 |
| British Groups of Things | 0 | - | 4.25 | 82,916 |
| British Acronyms | 0 | - | 4.40 | 45,856 |
| UK Immigration by Country | 0 | - | 4.94 | 141,186 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,059 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,214 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,024 |
| Geography of Scotland | 0 | - | 4.63 | 21,661 |
| Famous Scottish People | 0 | - | 4.22 | 18,415 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,053 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,676 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,895 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,669 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,661 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,656 |
| Slavic Languages | 0 | - | 4.68 | 54,475 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,864 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,372 |
| French History Multiple Choice | 0 | - | 4.55 | 33,132 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,214 |
| History of Germany | 0 | - | 4.39 | 52,906 |
| The Trojan War | 0 | - | 4.83 | 39,804 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,025 |
| Name that Greek Letter | 0 | - | 4.93 | 324,205 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,276 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,666 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,660 |
| Roman Emperors | 0 | - | 4.95 | 120,424 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,517 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,658 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,537 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,776 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,048 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,882 |
| Malta Country Quiz | 0 | - | 4.81 | 31,119 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,371 |
| Famous Russians | 0 | - | 4.16 | 23,870 |
| History of Russia Quiz | 0 | - | 4.47 | 31,957 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,783 |
| Russian History A-Z | 0 | - | 4.35 | 31,880 |
| Movies Set in France | 0 | - | 4.26 | 13,134 |
| French Inventions | 0 | - | 4.10 | 13,910 |
| History of Paris | 0 | - | 4.24 | 13,660 |
| Word Chain - Germany | 0 | - | 4.31 | 22,628 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,181 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,981 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,543 |
| Famous Irish People | 0 | - | 4.05 | 46,024 |
| History of Italy | 0 | - | 4.55 | 32,060 |
| Word Chain - Italy | 0 | - | 4.07 | 23,186 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,982 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,129 |
| Amsterdam Trivia | 0 | - | 4.46 | 15,826 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,301 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,362 |
| Name a Valid English City | 0 | - | 4.19 | 16,756 |
| London A-Z | 0 | - | 4.10 | 40,818 |
| Asian Cities A-Z by Clue | 0 | - | 4.51 | 42,420 |
| Africa A-Z | 0 | - | 4.57 | 46,686 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,297 |
| Europe Map Quiz | 0 | - | 5.00 | 4,772,095 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,361 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,018 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,308 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,303 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,557 |
| Capitals of French Regions | 0 | - | 4.45 | 16,117 |
| Kings of France Quiz | 0 | - | 4.20 | 32,821 |
| Capitals of German States | 0 | - | 4.74 | 28,990 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,403 |
| Ancient Greek Words | 0 | - | 4.93 | 111,932 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,283 |
| British to American Food Translation | 0 | - | 3.38 | 51,986 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,497 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,727 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,114 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,130 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,275 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 65,847 |
| Asian Geography By Letter - M | 0 | - | 4.48 | 61,509 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 58,017 |
| Asian Geography by Letter - T | 0 | - | 4.51 | 57,478 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,737 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,139 |
| Asian Geography By Letter - O | 0 | - | 4.66 | 32,046 |
| Middle East A-Z | 0 | - | 4.47 | 46,152 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,631 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,320,077 |
| Oceania Map Quiz | 0 | - | 4.98 | 653,991 |
| Australian Capitals | 0 | - | 4.92 | 62,759 |
| Canada A-Z | 0 | - | 4.73 | 32,893 |
