| European Countries by First 2 Letters | 0 | - | 4.95 | 530,761 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,490 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,218 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,789 |
| States of Germany | 0 | - | 4.95 | 153,321 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,310 |
| Regions of Italy | 0 | - | 4.92 | 76,309 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,464 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,477 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,436 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,760 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,354 |
| Official European Union Languages | 0 | - | 4.97 | 238,977 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,176 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,232 |
| The Vikings! | 0 | - | 4.46 | 28,372 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,123 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,922 |
| History of Italy | 0 | - | 4.55 | 32,062 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,988 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,725 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,307 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,436 |
| Celtic Nations | 0 | - | 4.69 | 47,003 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,590 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,536 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,393 |
| Counties of England | 0 | - | 4.97 | 799,249 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,391 |
| Regions of France | 0 | - | 4.70 | 121,308 |
| France Immigration by Country | 0 | - | 4.70 | 76,699 |
| Famous Germans | 0 | - | 4.50 | 55,545 |
| German Groups of Things | 0 | - | 4.46 | 38,530 |
| Germany True or False? | 0 | - | 4.61 | 48,902 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,156 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,852 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,514 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,349 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,468 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 97,985 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,424 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,597 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,114 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,367 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,130 |
| History of Austria | 0 | - | 4.70 | 17,913 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,896 |
| Geography of the French Empire | 0 | - | 4.45 | 27,159 |
| The French Revolution | 0 | - | 4.47 | 24,071 |
| France Multiple Choice | 0 | - | 4.39 | 40,774 |
| History of France | 0 | - | 4.61 | 57,304 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,257 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,223 |
| The Portuguese Empire | 0 | - | 4.58 | 12,086 |
| American to British Word Translation | 0 | - | 4.14 | 139,347 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,959 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,189 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,272 |
| Champions League Winners | 0 | - | 4.92 | 1,010,278 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,040 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,469 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,739 |
| Departments of France | 0 | - | 4.93 | 54,523 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,621 |
| England or Wales? | 0 | - | 4.94 | 45,814 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,093 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,657 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,676 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,924 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,707 |
| Slavic Languages | 0 | - | 4.68 | 54,484 |
| Famous French People | 0 | - | 4.07 | 35,877 |
| Word Chain - France | 0 | - | 4.38 | 42,852 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,675 |
| Italian Foods | 0 | - | 4.30 | 72,964 |
| The Mafia Quiz | 0 | - | 4.46 | 23,376 |
| History of The Netherlands | 0 | - | 4.46 | 17,491 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,517 |
| Canary Islands | 0 | - | 4.62 | 17,496 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,840 |
| British Spellings | 0 | - | 4.06 | 99,516 |
| British Groups of Things | 0 | - | 4.25 | 82,917 |
| British Acronyms | 0 | - | 4.40 | 45,858 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,059 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,968 |
| Geography of Scotland | 0 | - | 4.63 | 21,669 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,660 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,878 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,512 |
| Geography of Germany | 0 | - | 4.35 | 17,212 |
| History of Germany | 0 | - | 4.39 | 52,906 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,147 |
| Name that Greek Letter | 0 | - | 4.93 | 324,231 |
| History of Spain | 0 | - | 4.23 | 21,122 |
| Languages of Spain | 0 | - | 4.36 | 23,356 |
| British to American Word Translation | 0 | - | 3.74 | 255,183 |
| British Foods by Description | 0 | - | 3.94 | 48,346 |
| British and American Word Differences | 0 | - | 2.63 | 46,900 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,886 |
| Bridges of London | 0 | - | 4.17 | 10,122 |
| British Sport Trivia | 0 | - | 4.37 | 20,487 |
| Famous Welsh People | 0 | - | 4.31 | 11,574 |
| Malta Country Quiz | 0 | - | 4.81 | 31,125 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,383 |
| History of Russia Quiz | 0 | - | 4.47 | 31,957 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,783 |
| Movies Set in France | 0 | - | 4.26 | 13,135 |
| French Inventions | 0 | - | 4.10 | 13,910 |
| History of Paris | 0 | - | 4.24 | 13,663 |
| Word Chain - Germany | 0 | - | 4.31 | 22,631 |
| The Trojan War | 0 | - | 4.83 | 39,811 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,298 |
| Word Chain - Italy | 0 | - | 4.07 | 23,191 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,131 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,666 |
| Roman Emperors | 0 | - | 4.95 | 120,444 |
| Famous Nordic People | 0 | - | 4.34 | 20,178 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,806 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,624 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,968 |
| 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 | 16,757 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,759 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,653 |
| Australian Capitals | 0 | - | 4.92 | 62,760 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,025 |
| European Geography By Letter - B #1 | 0 | - | 4.69 | 120,421 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,820 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,373 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,040 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,373 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,233 |
| European Geography By Letter - R | 0 | - | 4.42 | 94,045 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,309 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,874 |
| Europe Map Quiz | 0 | - | 5.00 | 4,772,650 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,366 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,029 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,323 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,307 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,913 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,561 |
| Capitals of French Regions | 0 | - | 4.45 | 16,117 |
| Capitals of German States | 0 | - | 4.74 | 28,992 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,408 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,039 |
| Ancient Greek Words | 0 | - | 4.93 | 111,945 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,168 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,143 |
| Oceania Map Quiz | 0 | - | 4.98 | 654,546 |
| European Physical Geography | 0 | - | 4.26 | 33,542 |
| Geography of Russia | 0 | - | 4.57 | 21,556 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,026 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,185 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,292 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,177 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,381 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,731 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,410 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,745 |
| Geography of the British Empire | 0 | - | 4.48 | 39,744 |
| Champions League Top 4 | 0 | - | 4.77 | 137,393 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,865 |
| Asia Map Quiz | 0 | - | 4.99 | 920,054 |
| Africa Map Quiz | 0 | - | 5.00 | 2,122,344 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,991 |
| Australia Map Quiz | 0 | - | 4.95 | 345,274 |
| United States Map Quiz | 0 | - | 4.98 | 4,164,077 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,878 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,749 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,663 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,145 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,294 |
| European Geography By Letter - F | 0 | - | 4.17 | 93,638 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,490 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,177 |
| European Geography By Letter - I | 0 | - | 4.09 | 95,920 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,553 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,034 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,167 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,757 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,463 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,763 |
| European Geography A-Z | 0 | - | 4.29 | 49,370 |
| Country Codes of Europe | 0 | - | 3.43 | 13,759 |
| The Only European Country ... | 0 | - | 4.91 | 217,524 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,660 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,318 |
| Austria... or Australia? | 0 | - | 4.68 | 104,521 |
| Presidents of France | 0 | - | 4.25 | 24,219 |
| French Foods | 0 | - | 4.00 | 27,730 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,087 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,951 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,813 |
| Italian Inventions | 0 | - | 3.81 | 18,462 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,436 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,071 |
| Biggest Immigrant Groups by Decade in the UK | 0 | - | 4.63 | 25,411 |
