| Famous Germans | 0 | - | 4.50 | 55,665 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,085 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,697 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,885 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,557 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,264 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,893 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,698 |
| Famous French People | 0 | - | 4.07 | 36,001 |
| States of Germany | 0 | - | 4.95 | 153,983 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,529 |
| Regions of Italy | 0 | - | 4.92 | 76,682 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,649 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,998 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,607 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,656 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,115 |
| Departments of France | 0 | - | 4.93 | 54,854 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,700 |
| England or Wales? | 0 | - | 4.94 | 45,893 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,574 |
| Official European Union Languages | 0 | - | 4.97 | 239,431 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,439 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,166 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,264 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,704 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,628 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,219 |
| The Mafia Quiz | 0 | - | 4.46 | 23,410 |
| History of The Netherlands | 0 | - | 4.46 | 17,529 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,994 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,056 |
| Famous Scottish People | 0 | - | 4.22 | 18,427 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,469 |
| Celtic Nations | 0 | - | 4.61 | 47,061 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,654 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,034 |
| European Geography By Letter - C | 0 | - | 4.43 | 122,782 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,038 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,711 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,040 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,850 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,361 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,579 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,265 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,199 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,199 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 174,923 |
| Regions of France | 0 | - | 4.70 | 121,728 |
| France A-Z | 0 | - | 4.16 | 38,309 |
| France Immigration by Country | 0 | - | 4.70 | 76,828 |
| German Groups of Things | 0 | - | 4.47 | 38,594 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,617 |
| Germany True or False? | 0 | - | 4.61 | 48,960 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,339 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,330 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,633 |
| Switzerland A-Z | 0 | - | 4.45 | 25,739 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,379 |
| Counties of England | 0 | - | 4.97 | 801,248 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,649 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,764 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,066 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,604 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,609 |
| Famous Russians | 0 | - | 4.16 | 23,890 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,907 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,361 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,544 |
| Famous Irish People | 0 | - | 4.05 | 46,050 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,913 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,376 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,659 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,564 |
| People on Money - England | 0 | - | 4.29 | 16,635 |
| Champions League Winners | 0 | - | 4.92 | 1,013,127 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,876 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,691 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,649 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,311 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,805 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,780 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,090 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,895 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,596 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,294 |
| European Geography By Letter - K | 0 | - | 4.15 | 70,929 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,346 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,407 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,696 |
| European Geography A-Z | 0 | - | 4.29 | 49,431 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,124 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,429 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,421 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,874 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,511 |
| Word Chain - France | 0 | - | 4.38 | 42,897 |
| Germany Country Quiz | 0 | - | 4.83 | 158,561 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,896 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,172 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,002 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,016 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,870 |
| Italian Foods | 0 | - | 4.30 | 73,124 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,319 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,584 |
| Canary Islands | 0 | - | 4.62 | 17,513 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,584 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,956 |
| British Spellings | 0 | - | 4.06 | 99,558 |
| British Groups of Things | 0 | - | 4.25 | 82,975 |
| British Acronyms | 0 | - | 4.40 | 45,899 |
| UK Immigration by Country | 0 | - | 4.94 | 141,458 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,085 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,658 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,461 |
| Geography of Scotland | 0 | - | 4.63 | 21,704 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,626 |
| Famous Australians by Description | 0 | - | 4.23 | 28,085 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,699 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,148 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,259 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,762 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,779 |
| Slavic Languages | 0 | - | 4.68 | 54,609 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,007 |
| French History Multiple Choice | 0 | - | 4.55 | 33,178 |
| History of Germany | 0 | - | 4.39 | 52,945 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,693 |
| Name that Greek Letter | 0 | - | 4.93 | 324,659 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,704 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,590 |
| Most Common First Names in Spain | 0 | - | 4.32 | 54,773 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,714 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,908 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,075 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,008 |
| Malta Country Quiz | 0 | - | 4.81 | 31,198 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,632 |
| History of Russia Quiz | 0 | - | 4.47 | 31,985 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,831 |
| Russian History A-Z | 0 | - | 4.35 | 32,098 |
| Movies Set in France | 0 | - | 4.26 | 13,140 |
| French Inventions | 0 | - | 4.10 | 13,918 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,574 |
| History of Paris | 0 | - | 4.24 | 13,667 |
| Word Chain - Germany | 0 | - | 4.31 | 22,659 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,433 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,211 |
| The Trojan War | 0 | - | 4.83 | 39,930 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,669 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,125 |
| History of Italy | 0 | - | 4.55 | 32,107 |
| Word Chain - Italy | 0 | - | 4.07 | 23,205 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,192 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,145 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,478 |
| Roman Emperors | 0 | - | 4.95 | 120,877 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,781 |
| Most Common Last Names in Sweden | 0 | - | 4.50 | 15,463 |
| Countries Closest to Iceland | 0 | - | 4.90 | 73,953 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,142 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,379 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,384 |
| Name a Valid English City | 0 | - | 4.19 | 16,792 |
| London A-Z | 0 | - | 4.10 | 40,855 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 42,853 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,294 |
| Famous Chinese People | 0 | - | 4.09 | 11,909 |
| Africa A-Z | 0 | - | 4.57 | 46,738 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,034 |
| Famous Mexicans and Mexican-Americans | 0 | - | 4.15 | 16,958 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,409 |
| Europe Map Quiz | 0 | - | 5.00 | 4,780,613 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,447 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,102 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,398 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,364 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,418 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,641 |
| Capitals of French Regions | 0 | - | 4.45 | 16,154 |
| Kings of France Quiz | 0 | - | 4.20 | 32,876 |
| Capitals of German States | 0 | - | 4.74 | 29,033 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,492 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,961 |
| Ancient Greek Words | 0 | - | 4.93 | 112,237 |
| Iceland... or Ireland? | 0 | - | 4.74 | 57,176 |
| British to American Food Translation | 0 | - | 3.38 | 52,017 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,538 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,861 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,561 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 71,362 |
| Asian Geography by Letter - H | 0 | - | 4.50 | 65,956 |
| Asian Geography By Letter - M | 0 | - | 4.48 | 61,579 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 58,104 |
| Asian Geography by Letter - T | 0 | - | 4.52 | 57,567 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 43,232 |
| Asian Geography By Letter - O | 0 | - | 4.66 | 32,184 |
| Middle East A-Z | 0 | - | 4.47 | 46,204 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,323,102 |
