| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,534 |
| States of Germany | 0 | - | 4.95 | 155,066 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,867 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 533,281 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,776 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,638 |
| States of Germany Map Quiz | 0 | - | 4.92 | 134,069 |
| Regions of Italy | 0 | - | 4.92 | 77,337 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,974 |
| Regions of Spain Quiz | 0 | - | 4.91 | 115,689 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,971 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,879 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,890 |
| Official European Union Languages | 0 | - | 4.97 | 240,472 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,895 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,601 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,581 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,415 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,121 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,698 |
| History of Italy | 0 | - | 4.55 | 32,200 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,577 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,867 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,485 |
| Celtic Nations | 0 | - | 4.61 | 47,131 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,178 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,365 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,801 |
| Geography of Germany | 0 | - | 4.36 | 17,453 |
| History of Germany | 0 | - | 4.39 | 53,011 |
| Counties of England | 0 | - | 4.97 | 804,800 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 363,101 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 23,544 |
| Regions of France | 0 | - | 4.70 | 122,524 |
| France Immigration by Country | 0 | - | 4.70 | 77,045 |
| Famous Germans | 0 | - | 4.50 | 55,903 |
| German Groups of Things | 0 | - | 4.47 | 38,684 |
| Germany True or False? | 0 | - | 4.61 | 49,093 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,623 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,589 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,982 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,519 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 104,001 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,864 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,959 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 293,064 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,285 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,937 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.74 | 58,846 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 89,349 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,240 |
| Federal Subjects of Russia | 0 | - | 4.95 | 150,050 |
| History of Austria | 0 | - | 4.70 | 17,994 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,877 |
| Geography of the French Empire | 0 | - | 4.45 | 27,242 |
| The French Revolution | 0 | - | 4.47 | 24,175 |
| France Multiple Choice | 0 | - | 4.39 | 40,881 |
| History of France | 0 | - | 4.61 | 57,771 |
| The Vikings! | 0 | - | 4.46 | 28,434 |
| The Portuguese Empire | 0 | - | 4.58 | 12,120 |
| American to British Word Translation | 0 | - | 4.14 | 139,882 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,101 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,701 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,374 |
| Champions League Winners | 0 | - | 4.92 | 1,018,746 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,514 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,477 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,408 |
| Departments of France | 0 | - | 4.93 | 55,486 |
| Germany Country Quiz | 0 | - | 4.82 | 159,170 |
| Countries Bordering Germany | 0 | - | 4.99 | 372,387 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,797 |
| England or Wales? | 0 | - | 4.94 | 46,096 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,624 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,814 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,743 |
| Word Scramble - European Countries | 0 | - | 4.72 | 142,494 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 124,716 |
| Slavic Languages | 0 | - | 4.67 | 54,807 |
| Famous French People | 0 | - | 4.05 | 36,201 |
| Word Chain - France | 0 | - | 4.38 | 42,976 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,765 |
| Italian Foods | 0 | - | 4.30 | 73,432 |
| The Mafia Quiz | 0 | - | 4.46 | 23,455 |
| History of The Netherlands | 0 | - | 4.46 | 17,582 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,672 |
| Canary Islands | 0 | - | 4.62 | 17,551 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,192 |
| British Spellings | 0 | - | 4.06 | 99,642 |
| British Groups of Things | 0 | - | 4.26 | 83,051 |
| British Acronyms | 0 | - | 4.40 | 45,996 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,136 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,242 |
| Geography of Scotland | 0 | - | 4.63 | 21,841 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,095 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,323 |
| French History Multiple Choice | 0 | - | 4.55 | 33,285 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 99,317 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,406 |
| Name that Greek Letter | 0 | - | 4.93 | 325,417 |
| History of Spain | 0 | - | 4.23 | 21,179 |
| Languages of Spain | 0 | - | 4.36 | 23,475 |
| British to American Word Translation | 0 | - | 3.74 | 255,414 |
| British Foods by Description | 0 | - | 3.94 | 48,419 |
| British and American Word Differences | 0 | - | 2.63 | 46,943 |
| British Geography Quiz #2 | 0 | - | 4.30 | 28,263 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,179 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 47,111 |
| Bridges of London | 0 | - | 4.17 | 10,153 |
| British Sport Trivia | 0 | - | 4.39 | 20,558 |
| Famous Welsh People | 0 | - | 4.34 | 11,741 |
| Malta Country Quiz | 0 | - | 4.81 | 31,277 |
| Top European Languages on a Map | 0 | - | 4.77 | 133,060 |
| History of Russia Quiz | 0 | - | 4.47 | 32,033 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,913 |
| Movies Set in France | 0 | - | 4.26 | 13,165 |
| French Inventions | 0 | - | 4.10 | 13,933 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,851 |
| History of Paris | 0 | - | 4.24 | 13,687 |
| Word Chain - Germany | 0 | - | 4.31 | 22,704 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,575 |
| The Trojan War | 0 | - | 4.83 | 40,126 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,365 |
| Word Chain - Italy | 0 | - | 4.07 | 23,237 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,187 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,735 |
| Roman Emperors | 0 | - | 4.95 | 121,525 |
| Famous Nordic People | 0 | - | 4.34 | 20,364 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,652 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,157 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,428 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,586 |
| People on Money - England | 0 | - | 4.30 | 21,301 |
| Name a Valid English City | 0 | - | 4.19 | 16,849 |
| A Quiz About The Beatles | 0 | - | 4.56 | 48,430 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 281,147 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,764 |
| Australian Capitals | 0 | - | 4.92 | 62,887 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,564 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 122,009 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,568 |
| European Geography By Letter - D | 0 | - | 4.49 | 119,126 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,505 |
| European Geography By Letter - M | 0 | - | 4.70 | 133,040 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,436 |
| European Geography By Letter - R | 0 | - | 4.43 | 95,012 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,285 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,924 |
| Europe Map Quiz | 0 | - | 5.00 | 4,795,458 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,595 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,267 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,536 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,493 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,667 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,643 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,804 |
| Capitals of French Regions | 0 | - | 4.45 | 16,217 |
| Capitals of German States | 0 | - | 4.74 | 29,102 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,603 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,750 |
| Ancient Greek Words | 0 | - | 4.93 | 112,741 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 128,130 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,617 |
| Imagine Lyrics | 0 | - | 4.54 | 43,595 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,850 |
| European Physical Geography | 0 | - | 4.26 | 33,623 |
| Geography of Russia | 0 | - | 4.57 | 21,629 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,182 |
| German History A-Z | 0 | - | 4.49 | 24,957 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,692 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,662 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,457 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,506 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,511 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,863 |
| Beatles Lyrics First Names | 0 | - | 4.36 | 40,258 |
| Beatles Songs by Synonyms | 0 | - | 4.74 | 41,107 |
| Elton John Quiz | 0 | - | 4.49 | 18,540 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,498 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,417 |
| Geography of the British Empire | 0 | - | 4.48 | 39,892 |
| Champions League Top 4 | 0 | - | 4.78 | 139,761 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,778 |
| Asia Map Quiz | 0 | - | 4.99 | 927,279 |
| Africa Map Quiz | 0 | - | 5.00 | 2,131,549 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,658 |
| Australia Map Quiz | 0 | - | 4.95 | 346,647 |
| United States Map Quiz | 0 | - | 4.98 | 4,174,417 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,511 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 93,012 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,398 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,723 |
| European Geography By Letter - E | 0 | - | 4.25 | 122,581 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,892 |
| European Geography By Letter - H | 0 | - | 4.30 | 97,541 |
| European Geography By Letter - G | 0 | - | 4.27 | 104,341 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,867 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,514 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,852 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,773 |
