| European Countries by First 2 Letters | 0 | - | 4.95 | 530,722 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,486 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,212 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,713 |
| States of Germany | 0 | - | 4.95 | 153,285 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,304 |
| Regions of Italy | 0 | - | 4.92 | 76,301 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,453 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,460 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,431 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,758 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,346 |
| Official European Union Languages | 0 | - | 4.97 | 238,969 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,157 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,157 |
| The Vikings! | 0 | - | 4.46 | 28,371 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,121 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,920 |
| History of Italy | 0 | - | 4.55 | 32,062 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,982 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,723 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,301 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,434 |
| Celtic Nations | 0 | - | 4.69 | 47,002 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,548 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,440 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,318 |
| Counties of England | 0 | - | 4.97 | 799,143 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,333 |
| Regions of France | 0 | - | 4.72 | 121,281 |
| France Immigration by Country | 0 | - | 4.70 | 76,694 |
| Famous Germans | 0 | - | 4.50 | 55,543 |
| German Groups of Things | 0 | - | 4.46 | 38,529 |
| Germany True or False? | 0 | - | 4.61 | 48,895 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,155 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,834 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,510 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,346 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,466 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 97,972 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,414 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,592 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,025 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,351 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,073 |
| History of Austria | 0 | - | 4.70 | 17,911 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,887 |
| Geography of the French Empire | 0 | - | 4.45 | 27,157 |
| The French Revolution | 0 | - | 4.47 | 24,069 |
| France Multiple Choice | 0 | - | 4.39 | 40,774 |
| History of France | 0 | - | 4.59 | 57,293 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,244 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,219 |
| The Portuguese Empire | 0 | - | 4.58 | 12,086 |
| American to British Word Translation | 0 | - | 4.14 | 139,338 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,954 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,175 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,225 |
| Champions League Winners | 0 | - | 4.92 | 1,010,148 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,986 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,426 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,694 |
| Departments of France | 0 | - | 4.93 | 54,509 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,620 |
| England or Wales? | 0 | - | 4.94 | 45,811 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,065 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,652 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,676 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,905 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,680 |
| Slavic Languages | 0 | - | 4.68 | 54,477 |
| Famous French People | 0 | - | 4.07 | 35,873 |
| Word Chain - France | 0 | - | 4.38 | 42,850 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,666 |
| Italian Foods | 0 | - | 4.30 | 72,956 |
| The Mafia Quiz | 0 | - | 4.46 | 23,375 |
| History of The Netherlands | 0 | - | 4.46 | 17,489 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,517 |
| Canary Islands | 0 | - | 4.62 | 17,494 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,836 |
| British Spellings | 0 | - | 4.06 | 99,512 |
| British Groups of Things | 0 | - | 4.25 | 82,916 |
| British Acronyms | 0 | - | 4.40 | 45,856 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,059 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,964 |
| Geography of Scotland | 0 | - | 4.63 | 21,666 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,656 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,865 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,510 |
| Geography of Germany | 0 | - | 4.35 | 17,211 |
| History of Germany | 0 | - | 4.39 | 52,906 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,043 |
| Name that Greek Letter | 0 | - | 4.93 | 324,214 |
| History of Spain | 0 | - | 4.23 | 21,119 |
| Languages of Spain | 0 | - | 4.36 | 23,354 |
| British to American Word Translation | 0 | - | 3.74 | 255,178 |
| British Foods by Description | 0 | - | 3.94 | 48,346 |
| British and American Word Differences | 0 | - | 2.63 | 46,899 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,819 |
| Bridges of London | 0 | - | 4.17 | 10,121 |
| British Sport Trivia | 0 | - | 4.37 | 20,487 |
| Famous Welsh People | 0 | - | 4.31 | 11,571 |
| Malta Country Quiz | 0 | - | 4.81 | 31,120 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,374 |
| History of Russia Quiz | 0 | - | 4.47 | 31,957 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,783 |
| Movies Set in France | 0 | - | 4.26 | 13,134 |
| French Inventions | 0 | - | 4.10 | 13,910 |
| History of Paris | 0 | - | 4.24 | 13,662 |
| Word Chain - Germany | 0 | - | 4.31 | 22,630 |
| The Trojan War | 0 | - | 4.83 | 39,807 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,281 |
| Word Chain - Italy | 0 | - | 4.07 | 23,186 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,130 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,663 |
| Roman Emperors | 0 | - | 4.95 | 120,428 |
| Famous Nordic People | 0 | - | 4.34 | 20,177 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,802 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,624 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,965 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,364 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,547 |
| People on Money - England | 0 | - | 4.29 | 16,625 |
| Name a Valid English City | 0 | - | 4.19 | 16,756 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,742 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,635 |
| Australian Capitals | 0 | - | 4.92 | 62,759 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,016 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 120,408 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,809 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,358 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,031 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,354 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,226 |
| European Geography By Letter - R | 0 | - | 4.42 | 94,035 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,303 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,864 |
| Europe Map Quiz | 0 | - | 5.00 | 4,772,257 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,362 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,021 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,313 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,304 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,907 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,559 |
| Capitals of French Regions | 0 | - | 4.45 | 16,117 |
| Capitals of German States | 0 | - | 4.74 | 28,990 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,406 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,001 |
| Ancient Greek Words | 0 | - | 4.93 | 111,935 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,125 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,134 |
| Oceania Map Quiz | 0 | - | 4.98 | 654,139 |
| European Physical Geography | 0 | - | 4.26 | 33,542 |
| Geography of Russia | 0 | - | 4.57 | 21,556 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,023 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,140 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,289 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,172 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,379 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,727 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,408 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,685 |
| Geography of the British Empire | 0 | - | 4.48 | 39,740 |
| Champions League Top 4 | 0 | - | 4.77 | 137,367 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,822 |
| Asia Map Quiz | 0 | - | 4.99 | 919,958 |
| Africa Map Quiz | 0 | - | 5.00 | 2,122,199 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,965 |
| Australia Map Quiz | 0 | - | 4.95 | 345,246 |
| United States Map Quiz | 0 | - | 4.98 | 4,163,914 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,862 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,746 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,637 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,115 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,287 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,633 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,484 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,171 |
| European Geography By Letter - I | 0 | - | 4.09 | 95,913 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,551 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,031 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,162 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,753 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,462 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,737 |
| European Geography A-Z | 0 | - | 4.29 | 49,370 |
| Country Codes of Europe | 0 | - | 3.43 | 13,757 |
| The Only European Country ... | 0 | - | 4.91 | 217,478 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,627 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,312 |
| Austria... or Australia? | 0 | - | 4.68 | 104,515 |
| Presidents of France | 0 | - | 4.25 | 24,219 |
| French Foods | 0 | - | 4.00 | 27,729 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,083 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,951 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,788 |
| Italian Inventions | 0 | - | 3.81 | 18,462 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,430 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,069 |
| Biggest Immigrant Groups by Decade in the UK | 0 | - | 4.63 | 25,406 |
