| Germany Multiple Choice | 0 | - | 4.81 | 49,320 |
| States of Germany | 0 | - | 4.93 | 123,549 |
| Germany Immigration by Country | 0 | - | 4.90 | 69,682 |
| States of the German Confederation in 1848 | 0 | - | 4.83 | 26,478 |
| European Countries by First 2 Letters | 0 | - | 4.96 | 457,107 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 31,771 |
| Regions of Spain Quiz | 0 | - | 4.85 | 94,868 |
| Cantons of Switzerland | 0 | - | 4.96 | 40,269 |
| Counties of Ireland | 0 | - | 4.89 | 159,090 |
| Regions of Italy | 0 | - | 4.88 | 60,379 |
| Count to 10 in Europe: Pro | 0 | - | 4.81 | 60,909 |
| Official European Union Languages | 0 | - | 4.98 | 200,298 |
| European Countries in their Native Language | 0 | - | 4.99 | 143,891 |
| German Groups of Things | 0 | - | 4.43 | 35,958 |
| Germany True or False? | 0 | - | 4.63 | 44,447 |
| Languages of the United Kingdom | 0 | - | 4.10 | 38,328 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 386,054 |
| Countries that Beat Switzerland | 0 | - | 4.85 | 37,589 |
| Europe Geography Decoder | 0 | - | 4.89 | 63,231 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.83 | 39,035 |
| Famous Germans | 0 | - | 4.39 | 35,183 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 584,109 |
| Geography of the Dutch Empire | 0 | - | 4.71 | 32,424 |
| Countries of the Spanish Empire | 0 | - | 4.51 | 74,657 |
| Top European Languages on a Map | 0 | - | 4.76 | 118,097 |
| Italy Multiple Choice | 0 | - | 4.74 | 93,796 |
| Add A Letter - Make a European City | 0 | - | 4.87 | 20,842 |
| Languages of Spain | 0 | - | 4.34 | 21,325 |
| Counties of England | 0 | - | 4.96 | 689,753 |
| Top Asian Languages on a Map | 0 | - | 4.94 | 60,629 |
| Top African Languages on a Map | 0 | - | 4.91 | 52,906 |
| Celtic Nations | 0 | - | 4.76 | 44,640 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.94 | 185,992 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.90 | 79,629 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 285,267 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 115,747 |
| Capitals of German States | 0 | - | 4.71 | 27,141 |
| Chancellors of Germany, 1949–present | 0 | - | 4.53 | 15,422 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 22,002 |
| Geography of Germany | 0 | - | 4.37 | 15,589 |
| History of Germany Quiz | 0 | - | 4.35 | 40,129 |
| Name that Greek Letter | 0 | - | 4.94 | 295,826 |
| Provinces of the Netherlands | 0 | - | 4.61 | 33,307 |
| 100 Greatest Britons Quiz | 0 | - | 4.44 | 46,012 |
| British Acronyms | 0 | - | 4.42 | 43,359 |
| Foods in a Full English Breakfast | 0 | - | 4.41 | 73,401 |
| Regions of France | 0 | - | 4.63 | 100,371 |
| France Immigration by Country | 0 | - | 4.80 | 68,920 |
| Largest Islands of Greece | 0 | - | 4.57 | 39,683 |
| The Vikings! | 0 | - | 4.44 | 27,105 |
| The Portuguese Empire | 0 | - | 4.54 | 11,336 |
| British Words Quiz #2 | 0 | - | 4.04 | 106,879 |
| Parts of the United Kingdom | 0 | - | 4.88 | 83,817 |
| Counties of England Map Quiz | 0 | - | 4.97 | 286,748 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 269,883 |
| Champions League Winners | 0 | - | 4.91 | 852,489 |
| Catholic Countries in Europe | 0 | - | 4.87 | 83,652 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.71 | 53,818 |
| Federal Subjects of Russia | 0 | - | 4.95 | 112,370 |
| History of Austria | 0 | - | 4.68 | 16,389 |
| Regions of France Map Quiz | 0 | - | 4.96 | 127,341 |
| Geography of the French Empire | 0 | - | 4.49 | 25,405 |
| The French Revolution | 0 | - | 4.45 | 21,912 |
| France Multiple Choice | 0 | - | 4.40 | 38,551 |
| History of France Quiz | 0 | - | 4.55 | 39,671 |
| States of Germany Map Quiz | 0 | - | 4.91 | 120,164 |
| Word Chain - Germany | 0 | - | 4.29 | 21,084 |
| History of Ireland Quiz | 0 | - | 4.44 | 18,899 |
| History of Italy | 0 | - | 4.49 | 29,782 |
| Countries Surrounding Rome | 0 | - | 4.96 | 46,597 |
| England or Wales? | 0 | - | 4.93 | 40,220 |
| All Champions League Teams Ever | 0 | - | 4.89 | 104,387 |
| Countries with the Most Arabic Speakers | 0 | - | 4.91 | 70,443 |
| Category Elimination - European Geography #1 | 0 | - | 4.97 | 200,659 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 246,824 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 142,721 |
| History of The Netherlands | 0 | - | 4.42 | 15,750 |
| Spanish Immigration by Country | 0 | - | 4.63 | 51,842 |
| Canary Islands | 0 | - | 4.60 | 16,557 |
| Switzerland Immigration by Country | 0 | - | 4.79 | 20,960 |
| British Spellings Quiz | 0 | - | 4.04 | 94,649 |
| British Groups of Things | 0 | - | 4.26 | 80,126 |
| United Kingdom Decoder | 0 | - | 4.27 | 38,733 |
| Pre-Euro Currencies | 0 | - | 4.42 | 49,407 |
| Word Scramble - European Countries | 0 | - | 4.72 | 113,834 |
| Top 20 Football Clubs in Europe | 0 | - | 4.49 | 85,415 |
| Slavic Languages | 0 | - | 4.58 | 48,713 |
| Word Chain - France | 0 | - | 4.38 | 39,981 |
| Famous Italians | 0 | - | 4.40 | 66,202 |
| Italian Foods | 0 | - | 4.25 | 64,165 |
| History of Spain Quiz | 0 | - | 4.33 | 19,567 |
| British Words Quiz #1 | 0 | - | 3.78 | 236,102 |
| British Foods | 0 | - | 3.85 | 47,039 |
| British and American Word Differences | 0 | - | 2.66 | 44,396 |
| British Geography Quiz #2 | 0 | - | 4.28 | 26,325 |
| Bridges of London | 0 | - | 4.11 | 9,357 |
| British Sport Trivia | 0 | - | 4.32 | 19,251 |
| Famous Welsh People | 0 | - | 4.12 | 9,264 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 56,320 |
| Countries With the Most Russian Speakers | 0 | - | 4.95 | 56,148 |
| Ancient Roman Trivia #1 | 0 | - | 4.84 | 71,687 |
| Roman Emperors | 0 | - | 4.95 | 95,834 |
| Famous Nordic People | 0 | - | 4.40 | 10,676 |
| Famous Spaniards Quiz | 0 | - | 4.19 | 10,928 |
| Invasions of Great Britain | 0 | - | 4.49 | 55,574 |
| Word Chain - United Kingdom | 0 | - | 4.04 | 27,964 |
| The British Royal Family - Modern Times | 0 | - | 4.12 | 20,623 |
| People on Money - England | 0 | - | 4.33 | 15,934 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 255,254 |
| African Countries by First 2 Letters | 0 | - | 4.95 | 244,679 |
| Russia Multiple Choice | 0 | - | 4.55 | 38,085 |
| French Geography Quiz #1 | 0 | - | 4.86 | 31,046 |
| Famous French People | 0 | - | 4.15 | 24,130 |
| Movies Set in France | 0 | - | 4.23 | 12,505 |
| French Inventions | 0 | - | 4.08 | 13,339 |
| History of Paris | 0 | - | 4.20 | 12,680 |
| The Trojan War | 0 | - | 4.81 | 35,929 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.81 | 85,347 |
| Word Chain - Italy | 0 | - | 4.08 | 21,990 |
| Beatles Songs Quiz | 0 | - | 4.95 | 207,264 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 273,711 |
| Australian Capitals | 0 | - | 4.92 | 60,634 |
| European Geography By Letter - A | 0 | - | 4.51 | 124,390 |
| European Geography By Letter - B #1 | 0 | - | 4.72 | 103,565 |
| European Geography By Letter - C | 0 | - | 4.43 | 104,932 |
| European Geography By Letter - D | 0 | - | 4.52 | 99,530 |
| European Geography By Letter - L | 0 | - | 4.51 | 104,923 |
| European Geography By Letter - M | 0 | - | 4.55 | 114,416 |
| European Geography By Letter - P | 0 | - | 4.79 | 89,538 |
| European Geography By Letter - N | 0 | - | 4.43 | 93,419 |
| European Geography By Letter - V | 0 | - | 4.45 | 86,465 |
| Europe Map Quiz | 0 | - | 5.00 | 4,290,292 |
| Europe Geography Quiz #1 | 0 | - | 4.53 | 67,063 |
| Europe Geography Quiz #2 | 0 | - | 4.56 | 67,535 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 66,205 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 57,868 |
| European Geography By Letter - S #1 | 0 | - | 4.57 | 93,914 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.76 | 60,939 |
| European Geography By Letter - B #2 | 0 | - | 4.72 | 62,053 |
| German Loan Words | 0 | - | 4.28 | 129,508 |
| All Bundesliga Teams Ever | 0 | - | 4.43 | 38,726 |
| Olympian Gods Quiz | 0 | - | 4.96 | 457,112 |
| Ancient Greek Words | 0 | - | 4.90 | 97,394 |
| Capitals of Italian Regions | 0 | - | 4.52 | 26,116 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 399,334 |
| Two Letter Roman Numerals | 0 | - | 4.98 | 48,639 |
| Sweden Immigration by Country | 0 | - | 4.66 | 42,266 |
| United Kingdom A-Z | 0 | - | 4.53 | 80,861 |
| Wives of King Henry VIII | 0 | - | 4.53 | 44,629 |
| Countries the UK Declared War On | 0 | - | 4.58 | 112,255 |
| Geography of the British Empire | 0 | - | 4.50 | 37,017 |
| Champions League Top 4 | 0 | - | 4.79 | 104,983 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,344,388 |
| Asia Map Quiz | 0 | - | 4.99 | 784,743 |
| Africa Map Quiz | 0 | - | 5.00 | 1,938,293 |
| Oceania Map Quiz | 0 | - | 4.98 | 567,684 |
| Top 10 Non-English Languages Spoken in New York City | 0 | - | 4.77 | 56,958 |
| European Physical Geography | 0 | - | 4.19 | 31,914 |
| History of Russia Quiz | 0 | - | 4.48 | 29,857 |
| Geography of Russia | 0 | - | 4.54 | 20,165 |
| Slovakia... or Slovenia? | 0 | - | 4.79 | 39,662 |
| Kings of Spain Quiz | 0 | - | 4.12 | 12,825 |
| British Monopoly Board | 0 | - | 4.51 | 39,237 |
| South and Central Asia Map Quiz | 0 | - | 4.92 | 79,788 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,280,827 |
| English Words of Arabic Origin | 0 | - | 4.55 | 46,856 |
| Countries of Africa | 0 | - | 5.00 | 2,165,619 |
| African East Coast | 0 | - | 4.97 | 84,131 |
| Western Africa Map Quiz | 0 | - | 4.97 | 60,859 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 40,268 |
| Australia Map Quiz | 0 | - | 4.95 | 319,534 |
| American Countries on the Pacific Coast | 0 | - | 4.81 | 46,088 |
| United States Map Quiz | 0 | - | 4.98 | 3,900,830 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 195,313 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.92 | 86,628 |
| Countries That Use the Euro | 0 | - | 4.92 | 62,874 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 335,675 |
| European Geography By Letter - E | 0 | - | 4.20 | 105,439 |
| European Geography By Letter - F | 0 | - | 4.15 | 85,282 |
| European Geography By Letter - H | 0 | - | 4.30 | 88,871 |
| European Geography By Letter - G | 0 | - | 4.24 | 95,093 |
| European Geography By Letter - I | 0 | - | 4.09 | 88,780 |
| European Geography By Letter - K | 0 | - | 4.16 | 64,494 |
| European Geography By Letter - O | 0 | - | 4.27 | 57,747 |
| European Geography By Letter - R | 0 | - | 4.39 | 87,535 |
| European Geography by Letter - W | 0 | - | 4.21 | 78,268 |
| European Geography By Letter - T | 0 | - | 4.39 | 70,899 |
| Europe Geography Quiz #3 | 0 | - | 4.32 | 59,943 |
| European Geography By Letter - S #2 | 0 | - | 4.16 | 46,753 |
| 10 Easternmost Countries in Europe | 0 | - | 4.85 | 92,129 |
| European Geography A-Z | 0 | - | 4.40 | 45,388 |
| Country Codes of Europe | 0 | - | 3.34 | 12,740 |
| The Only European Country ... | 0 | - | 4.94 | 178,331 |
| Word Chain - Russia | 0 | - | 4.41 | 14,811 |
| Austria... or Australia? | 0 | - | 4.79 | 97,979 |
| Capitals of French Regions | 0 | - | 4.40 | 14,760 |
| Presidents of France | 0 | - | 4.23 | 20,167 |
| French Foods | 0 | - | 3.94 | 26,400 |
| Bundesliga Champions | 0 | - | 4.19 | 44,816 |
| Ancient Greek Trivia | 0 | - | 4.56 | 63,379 |
