| Netherlands Immigration by Country | 0 | - | 4.93 | 52,898 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 532,975 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,122 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,083 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 89,053 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,335 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,146 |
| States of Germany | 0 | - | 4.95 | 154,888 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,791 |
| Regions of Italy | 0 | - | 4.92 | 77,240 |
| History of The Netherlands | 0 | - | 4.46 | 17,571 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,550 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,882 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,158 |
| Departments of France | 0 | - | 4.93 | 55,368 |
| Famous Germans | 0 | - | 4.50 | 55,859 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,525 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,774 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,912 |
| England or Wales? | 0 | - | 4.94 | 46,012 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,839 |
| Official European Union Languages | 0 | - | 4.97 | 240,285 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,789 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,342 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,424 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,772 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 61,779 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,373 |
| Famous French People | 0 | - | 4.05 | 36,152 |
| The Mafia Quiz | 0 | - | 4.46 | 23,450 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,094 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,200 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,843 |
| Celtic Nations | 0 | - | 4.61 | 47,125 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,337 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,734 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,240 |
| European Geography By Letter - D | 0 | - | 4.49 | 118,684 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,261 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,770 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,276 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,883 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,163 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,774 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,558 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,107 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,405 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,678 |
| Regions of France | 0 | - | 4.70 | 122,357 |
| France A-Z | 0 | - | 4.16 | 38,359 |
| France Immigration by Country | 0 | - | 4.70 | 77,000 |
| German Groups of Things | 0 | - | 4.47 | 38,663 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,741 |
| Germany True or False? | 0 | - | 4.61 | 49,060 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,507 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,563 |
| Switzerland A-Z | 0 | - | 4.45 | 25,786 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,430 |
| Counties of England | 0 | - | 4.97 | 804,072 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,936 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,837 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,494 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 23,534 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,955 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,882 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,879 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,793 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,958 |
| Famous Nordic People | 0 | - | 4.34 | 20,331 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,648 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,771 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,606 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,249 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,584 |
| People on Money - England | 0 | - | 4.29 | 16,650 |
| Champions League Winners | 0 | - | 4.92 | 1,017,682 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 67,100 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,808 |
| Netherlands Country Quiz | 0 | - | 4.52 | 81,026 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,435 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,860 |
| European Geography By Letter - E | 0 | - | 4.23 | 115,388 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,638 |
| European Geography By Letter - H | 0 | - | 4.30 | 97,336 |
| European Geography By Letter - G | 0 | - | 4.27 | 104,110 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,691 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,335 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,719 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,688 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,990 |
| European Geography A-Z | 0 | - | 4.29 | 49,514 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,262 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,260 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,206 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,982 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,973 |
| Word Chain - France | 0 | - | 4.38 | 42,958 |
| Germany Country Quiz | 0 | - | 4.82 | 159,027 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,209 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,277 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,069 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,402 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,195 |
| Italian Foods | 0 | - | 4.30 | 73,376 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,596 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 187,009 |
| Canary Islands | 0 | - | 4.62 | 17,549 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,085 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,143 |
| British Spellings | 0 | - | 4.06 | 99,625 |
| British Groups of Things | 0 | - | 4.26 | 83,038 |
| British Acronyms | 0 | - | 4.40 | 45,959 |
| UK Immigration by Country | 0 | - | 4.94 | 141,870 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,123 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 141,229 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,010 |
| Geography of Scotland | 0 | - | 4.63 | 21,794 |
| Famous Scottish People | 0 | - | 4.22 | 18,442 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,416 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,740 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,431 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 123,782 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,903 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,036 |
| Slavic Languages | 0 | - | 4.67 | 54,772 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,211 |
| French History Multiple Choice | 0 | - | 4.55 | 33,276 |
| History of Germany | 0 | - | 4.39 | 52,996 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,774 |
| Name that Greek Letter | 0 | - | 4.93 | 325,211 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,756 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,664 |
| Most Common First Names in Spain | 0 | - | 4.33 | 55,360 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,496 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,994 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 70,013 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,105 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,143 |
| Malta Country Quiz | 0 | - | 4.81 | 31,255 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,989 |
| Famous Russians | 0 | - | 4.16 | 23,924 |
| History of Russia Quiz | 0 | - | 4.47 | 32,022 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,898 |
| Russian History A-Z | 0 | - | 4.35 | 32,290 |
| Movies Set in France | 0 | - | 4.26 | 13,157 |
| French Inventions | 0 | - | 4.10 | 13,932 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,784 |
| History of Paris | 0 | - | 4.24 | 13,684 |
| Word Chain - Germany | 0 | - | 4.31 | 22,695 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,641 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,257 |
| The Trojan War | 0 | - | 4.83 | 40,042 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,139 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,828 |
| Famous Irish People | 0 | - | 4.05 | 46,076 |
| History of Italy | 0 | - | 4.55 | 32,179 |
| Word Chain - Italy | 0 | - | 4.07 | 23,228 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,506 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,177 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,673 |
| Roman Emperors | 0 | - | 4.95 | 121,394 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,465 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,424 |
| Name a Valid English City | 0 | - | 4.19 | 16,837 |
| London A-Z | 0 | - | 4.10 | 40,898 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 43,075 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 280,951 |
| Africa A-Z | 0 | - | 4.57 | 46,795 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,620 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,587 |
| Europe Map Quiz | 0 | - | 5.00 | 4,792,538 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,560 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,233 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,502 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,460 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,606 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,783 |
| Capitals of French Regions | 0 | - | 4.45 | 16,194 |
| Kings of France Quiz | 0 | - | 4.21 | 32,963 |
| Capitals of German States | 0 | - | 4.74 | 29,093 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,579 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,308 |
| Ancient Greek Words | 0 | - | 4.93 | 112,629 |
| British to American Food Translation | 0 | - | 3.38 | 52,059 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,595 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,640 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,963 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,519 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 66,134 |
| Asian Geography By Letter - M | 0 | - | 4.48 | 61,711 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 58,269 |
| Asian Geography by Letter - T | 0 | - | 4.52 | 57,708 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,376 |
| Asian Geography By Letter - O | 0 | - | 4.66 | 32,377 |
| Middle East A-Z | 0 | - | 4.47 | 46,270 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,327,371 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,186 |
| Australian Capitals | 0 | - | 4.92 | 62,860 |
| Canada A-Z | 0 | - | 4.73 | 32,990 |
| European Physical Geography | 0 | - | 4.26 | 33,615 |
