| European Countries by First 2 Letters | 0 | - | 4.95 | 526,303 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,045 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,412 |
| States of Germany | 0 | - | 4.96 | 150,016 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,001 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,517 |
| Regions of Italy | 0 | - | 4.92 | 74,696 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,801 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,318 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,139 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,403 |
| Regions of France | 0 | - | 4.78 | 119,220 |
| France Immigration by Country | 0 | - | 4.72 | 75,958 |
| Departments of France | 0 | - | 4.93 | 52,795 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,573 |
| Official European Union Languages | 0 | - | 4.97 | 236,502 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,694 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,169 |
| Geography of the French Empire | 0 | - | 4.48 | 26,927 |
| The French Revolution | 0 | - | 4.46 | 23,782 |
| France Multiple Choice | 0 | - | 4.38 | 40,633 |
| History of France | 0 | - | 4.59 | 56,025 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,511 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,534 |
| Word Chain - France | 0 | - | 4.38 | 42,581 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,588 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,563 |
| French History Multiple Choice | 0 | - | 4.55 | 32,875 |
| History of Italy | 0 | - | 4.55 | 31,813 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,157 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,479 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,979 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,238 |
| Celtic Nations | 0 | - | 4.69 | 46,810 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,839 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,799 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,851 |
| Capitals of French Regions | 0 | - | 4.45 | 15,984 |
| Famous Germans | 0 | - | 4.50 | 54,606 |
| German Groups of Things | 0 | - | 4.46 | 38,305 |
| Germany True or False? | 0 | - | 4.61 | 48,531 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,464 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,431 |
| Italy True or False? | 0 | - | 4.42 | 47,211 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,771 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,044 |
| Counties of England | 0 | - | 4.97 | 789,085 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,941 |
| The UK for Americans - True or False | 0 | - | 4.46 | 58,386 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,843 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,322 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,207 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,229 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,772 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,948 |
| Famous French People | 0 | - | 4.12 | 27,937 |
| Movies Set in France | 0 | - | 4.26 | 13,072 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,109 |
| French Inventions | 0 | - | 4.08 | 13,865 |
| History of Paris | 0 | - | 4.24 | 13,614 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,675 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,901 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,070 |
| Champions League Winners | 0 | - | 4.92 | 996,204 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,138 |
| History of Austria | 0 | - | 4.70 | 17,746 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,383 |
| The Vikings! | 0 | - | 4.45 | 28,244 |
| The Portuguese Empire | 0 | - | 4.54 | 11,990 |
| American to British Word Translation | 0 | - | 4.06 | 117,052 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,701 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,497 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,183 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,146 |
| Presidents of France | 0 | - | 4.25 | 23,900 |
| Italian Foods | 0 | - | 4.31 | 72,176 |
| The Mafia Quiz | 0 | - | 4.46 | 23,205 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,362 |
| History of The Netherlands | 0 | - | 4.46 | 17,310 |
| Canary Islands | 0 | - | 4.61 | 17,401 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,146 |
| British Spellings | 0 | - | 4.07 | 99,201 |
| British Groups of Things | 0 | - | 4.25 | 82,669 |
| British Acronyms | 0 | - | 4.39 | 45,617 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,944 |
| Geography of Scotland | 0 | - | 4.63 | 21,476 |
| England or Wales? | 0 | - | 4.94 | 45,309 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,477 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,446 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,598 |
| Word Scramble - European Countries | 0 | - | 4.70 | 140,980 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,023 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,786 |
| Slavic Languages | 0 | - | 4.67 | 53,974 |
| France A-Z | 0 | - | 4.16 | 38,056 |
| Geography of Germany | 0 | - | 4.35 | 17,085 |
| History of Germany | 0 | - | 4.39 | 52,613 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,808 |
| Name that Greek Letter | 0 | - | 4.94 | 321,633 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,428 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,243 |
| History of Spain | 0 | - | 4.29 | 21,000 |
| Languages of Spain | 0 | - | 4.36 | 23,146 |
| British to American Word Translation | 0 | - | 3.74 | 253,295 |
| British Foods by Description | 0 | - | 3.94 | 48,229 |
| British and American Word Differences | 0 | - | 2.67 | 45,910 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,506 |
| Bridges of London | 0 | - | 4.17 | 10,063 |
| British Sport Trivia | 0 | - | 4.37 | 20,363 |
| Famous Welsh People | 0 | - | 4.21 | 9,770 |
| Malta Country Quiz | 0 | - | 4.81 | 30,824 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,505 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,117 |
| History of Russia Quiz | 0 | - | 4.49 | 31,789 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,563 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,093 |
| French Foods | 0 | - | 4.00 | 27,588 |
| Word Chain - Germany | 0 | - | 4.31 | 22,474 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,455 |
| The Trojan War | 0 | - | 4.83 | 39,425 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,519 |
| 101 Figures from Greek Mythology | 0 | - | 5.00 | 124,275 |
| Word Chain - Italy | 0 | - | 4.07 | 23,087 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,041 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,040 |
| Roman Emperors | 0 | - | 4.95 | 118,461 |
| Famous Nordic People | 0 | - | 4.34 | 19,851 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,543 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,383 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,238 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,463 |
| People on Money - England | 0 | - | 4.29 | 16,562 |
| Name a Valid English City | 0 | - | 4.19 | 16,628 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,323 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,088 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,386 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 110,889 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,825 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,694 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,208 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,870 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,661 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,619 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,014 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,295 |
| Europe Map Quiz | 0 | - | 5.00 | 4,730,839 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,987 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,610 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,941 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,980 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,587 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,145 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,606 |
| Kings of France Quiz | 0 | - | 4.20 | 32,551 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,675 |
| Capitals of German States | 0 | - | 4.74 | 28,811 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,091 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,024 |
| Ancient Greek Words | 0 | - | 4.92 | 110,685 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,261 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,051 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,318 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,137 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,219 |
| Australian Capitals | 0 | - | 4.92 | 62,593 |
| European Physical Geography | 0 | - | 4.26 | 33,373 |
| Geography of Russia | 0 | - | 4.57 | 21,426 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,773 |
| France World Cup Squad 2018 | 0 | - | 4.41 | 33,276 |
| Ligue 1 Champions | 0 | - | 4.18 | 48,117 |
| Tour de France Winners | 0 | - | 4.27 | 15,219 |
| Embarrassing Chapters in French History | 0 | - | 3.67 | 20,045 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,484 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,614 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,689 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,211 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,170 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,391 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,173 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,765 |
| Geography of the British Empire | 0 | - | 4.48 | 39,469 |
| Champions League Top 4 | 0 | - | 4.77 | 133,774 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,440,199 |
| Asia Map Quiz | 0 | - | 4.99 | 906,916 |
| Countries of Africa | 0 | - | 5.00 | 2,507,434 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,802 |
| African East Coast | 0 | - | 4.96 | 95,037 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,912 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,783 |
| Australia Map Quiz | 0 | - | 4.94 | 342,449 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,499 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,113 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,199 |
| Top 10 Oldest African Countries | 0 | - | 4.88 | 27,441 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,953 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,286 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,204 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,534 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,888 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,265 |
