| Netherlands Immigration by Country | 0 | - | 4.93 | 52,428 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,538 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,596 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 86,672 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,312 |
| States of Germany | 0 | - | 4.95 | 153,209 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,287 |
| Regions of Italy | 0 | - | 4.92 | 76,240 |
| History of The Netherlands | 0 | - | 4.46 | 17,484 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,412 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,416 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,595 |
| Famous Germans | 0 | - | 4.50 | 55,534 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,805 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,500 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,091 |
| Departments of France | 0 | - | 4.93 | 54,469 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,615 |
| England or Wales? | 0 | - | 4.94 | 45,801 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,327 |
| Official European Union Languages | 0 | - | 4.97 | 238,929 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,135 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,063 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,159 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,646 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,112 |
| Famous French People | 0 | - | 4.07 | 35,855 |
| The Mafia Quiz | 0 | - | 4.46 | 23,370 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,721 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,916 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,941 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,234 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,069 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,645 |
| France A-Z | 0 | - | 4.16 | 38,268 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,480 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,197 |
| Switzerland A-Z | 0 | - | 4.45 | 25,689 |
| Counties of England | 0 | - | 4.97 | 798,915 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,205 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,429 |
| Celtic Nations | 0 | - | 4.69 | 46,996 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,967 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 120,371 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,760 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,317 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,986 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,316 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 97,930 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,200 |
| European Geography By Letter - R | 0 | - | 4.42 | 94,012 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,282 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,834 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,884 |
| Regions of France | 0 | - | 4.72 | 121,252 |
| France Immigration by Country | 0 | - | 4.70 | 76,684 |
| German Groups of Things | 0 | - | 4.46 | 38,526 |
| Germany True or False? | 0 | - | 4.61 | 48,892 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,142 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,340 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,171 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,444 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,694 |
| Champions League Winners | 0 | - | 4.92 | 1,009,919 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,759 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,392 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,010 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,851 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,184 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,654 |
| Famous Nordic People | 0 | - | 4.34 | 20,173 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,213 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,623 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,156 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,161 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,545 |
| People on Money - England | 0 | - | 4.29 | 16,625 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,754 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,714 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,251 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,610 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,457 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,148 |
| European Geography By Letter - I | 0 | - | 4.09 | 95,887 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,525 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,008 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,144 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,441 |
| European Geography A-Z | 0 | - | 4.29 | 49,364 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,586 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,930 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,384 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,637 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,778 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,163 |
| Word Chain - France | 0 | - | 4.38 | 42,843 |
| Germany Country Quiz | 0 | - | 4.83 | 158,180 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,629 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,076 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,947 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,662 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,589 |
| Italian Foods | 0 | - | 4.30 | 72,940 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,119 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,216 |
| Canary Islands | 0 | - | 4.62 | 17,492 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,267 |
| Switzerland Immigration by Country | 0 | - | 4.68 | 29,834 |
| British Spellings | 0 | - | 4.06 | 99,508 |
| British Groups of Things | 0 | - | 4.25 | 82,910 |
| British Acronyms | 0 | - | 4.40 | 45,852 |
| UK Immigration by Country | 0 | - | 4.94 | 141,166 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,055 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,177 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,988 |
| Geography of Scotland | 0 | - | 4.63 | 21,659 |
| Famous Scottish People | 0 | - | 4.22 | 18,415 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,006 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,675 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,880 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,618 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,656 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,644 |
| Slavic Languages | 0 | - | 4.67 | 54,467 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,855 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,363 |
| French History Multiple Choice | 0 | - | 4.55 | 33,127 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,205 |
| History of Germany | 0 | - | 4.39 | 52,898 |
| The Trojan War | 0 | - | 4.83 | 39,799 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,901 |
| Name that Greek Letter | 0 | - | 4.93 | 324,176 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,251 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,665 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,654 |
| Roman Emperors | 0 | - | 4.95 | 120,399 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,515 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,655 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,513 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,764 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,044 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,878 |
| Malta Country Quiz | 0 | - | 4.81 | 31,117 |
| Africa A-Z | 0 | - | 4.57 | 46,681 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,353 |
| Famous Russians | 0 | - | 4.16 | 23,868 |
| History of Russia Quiz | 0 | - | 4.47 | 31,950 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,778 |
| Russian History A-Z | 0 | - | 4.35 | 31,869 |
| Movies Set in France | 0 | - | 4.26 | 13,133 |
| French Inventions | 0 | - | 4.10 | 13,909 |
| History of Paris | 0 | - | 4.24 | 13,660 |
| Word Chain - Germany | 0 | - | 4.31 | 22,615 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,177 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,909 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,514 |
| Famous Irish People | 0 | - | 4.05 | 46,024 |
| History of Italy | 0 | - | 4.55 | 32,053 |
| Word Chain - Italy | 0 | - | 4.07 | 23,180 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,963 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,126 |
| Amsterdam Trivia | 0 | - | 4.46 | 15,826 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,296 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,360 |
| Name a Valid English City | 0 | - | 4.19 | 16,752 |
| London A-Z | 0 | - | 4.10 | 40,815 |
| Asian Cities A-Z by Clue | 0 | - | 4.51 | 42,299 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,602 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,292 |
| Europe Map Quiz | 0 | - | 5.00 | 4,771,342 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,354 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,009 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,301 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,296 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,549 |
| Capitals of French Regions | 0 | - | 4.45 | 16,112 |
| Kings of France Quiz | 0 | - | 4.20 | 32,817 |
| Capitals of German States | 0 | - | 4.74 | 28,990 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,402 |
| Ancient Greek Words | 0 | - | 4.93 | 111,915 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,279 |
| British to American Food Translation | 0 | - | 3.38 | 51,985 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,493 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,720 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,040 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,103 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,263 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 65,837 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,500 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 58,010 |
| Asian Geography by Letter - T | 0 | - | 4.51 | 57,470 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,704 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,131 |
| Asian Geography By Letter - O | 0 | - | 4.66 | 32,032 |
| Middle East A-Z | 0 | - | 4.47 | 46,148 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,319,828 |
| Africa Map Quiz | 0 | - | 5.00 | 2,121,858 |
| Oceania Map Quiz | 0 | - | 4.98 | 652,588 |
| Australian Capitals | 0 | - | 4.92 | 62,754 |
| Canada A-Z | 0 | - | 4.73 | 32,889 |
