| European Countries by First 2 Letters | 0 | - | 4.95 | 533,216 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,770 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,526 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,559 |
| States of Germany | 0 | - | 4.95 | 155,016 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,847 |
| Regions of Italy | 0 | - | 4.92 | 77,304 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,951 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,650 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,920 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,876 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,883 |
| Official European Union Languages | 0 | - | 4.97 | 240,434 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,868 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,527 |
| The Vikings! | 0 | - | 4.46 | 28,430 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,409 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,117 |
| History of Italy | 0 | - | 4.55 | 32,195 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,561 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,861 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,480 |
| Celtic Nations | 0 | - | 4.61 | 47,130 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,165 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,308 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,691 |
| Counties of England | 0 | - | 4.97 | 804,633 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,965 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 23,540 |
| Regions of France | 0 | - | 4.70 | 122,472 |
| France Immigration by Country | 0 | - | 4.70 | 77,034 |
| Famous Germans | 0 | - | 4.50 | 55,889 |
| German Groups of Things | 0 | - | 4.47 | 38,681 |
| Germany True or False? | 0 | - | 4.61 | 49,082 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,608 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,577 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,967 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,873 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,508 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,989 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,195 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,928 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.74 | 58,838 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 89,220 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,226 |
| Federal Subjects of Russia | 0 | - | 4.95 | 150,013 |
| History of Austria | 0 | - | 4.70 | 17,992 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,860 |
| Geography of the French Empire | 0 | - | 4.45 | 27,240 |
| The French Revolution | 0 | - | 4.47 | 24,173 |
| France Multiple Choice | 0 | - | 4.39 | 40,881 |
| History of France | 0 | - | 4.61 | 57,760 |
| States of Germany Map Quiz | 0 | - | 4.92 | 134,036 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,580 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,451 |
| The Portuguese Empire | 0 | - | 4.58 | 12,120 |
| American to British Word Translation | 0 | - | 4.14 | 139,863 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,096 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,680 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,344 |
| Champions League Winners | 0 | - | 4.92 | 1,018,497 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,464 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,429 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,371 |
| Departments of France | 0 | - | 4.93 | 55,452 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,793 |
| England or Wales? | 0 | - | 4.94 | 46,085 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,560 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,809 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,742 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,481 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 124,494 |
| Slavic Languages | 0 | - | 4.67 | 54,798 |
| Famous French People | 0 | - | 4.05 | 36,187 |
| Word Chain - France | 0 | - | 4.38 | 42,970 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,765 |
| Italian Foods | 0 | - | 4.30 | 73,418 |
| The Mafia Quiz | 0 | - | 4.46 | 23,454 |
| History of The Netherlands | 0 | - | 4.46 | 17,579 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,671 |
| Canary Islands | 0 | - | 4.62 | 17,551 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,182 |
| British Spellings | 0 | - | 4.06 | 99,638 |
| British Groups of Things | 0 | - | 4.26 | 83,048 |
| British Acronyms | 0 | - | 4.40 | 45,988 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,134 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,234 |
| Geography of Scotland | 0 | - | 4.63 | 21,837 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,086 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,314 |
| Geography of Germany | 0 | - | 4.36 | 17,441 |
| History of Germany | 0 | - | 4.39 | 53,010 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,263 |
| Name that Greek Letter | 0 | - | 4.93 | 325,379 |
| History of Spain | 0 | - | 4.23 | 21,178 |
| Languages of Spain | 0 | - | 4.36 | 23,474 |
| British to American Word Translation | 0 | - | 3.74 | 255,408 |
| British Foods by Description | 0 | - | 3.94 | 48,418 |
| British and American Word Differences | 0 | - | 2.63 | 46,940 |
| British Geography Quiz #2 | 0 | - | 4.30 | 28,262 |
| Bridges of London | 0 | - | 4.17 | 10,151 |
| British Sport Trivia | 0 | - | 4.39 | 20,556 |
| Famous Welsh People | 0 | - | 4.34 | 11,730 |
| Malta Country Quiz | 0 | - | 4.81 | 31,275 |
| Top European Languages on a Map | 0 | - | 4.77 | 133,045 |
| History of Russia Quiz | 0 | - | 4.47 | 32,031 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,910 |
| Movies Set in France | 0 | - | 4.26 | 13,162 |
| French Inventions | 0 | - | 4.10 | 13,933 |
| History of Paris | 0 | - | 4.24 | 13,687 |
| Word Chain - Germany | 0 | - | 4.31 | 22,703 |
| The Trojan War | 0 | - | 4.83 | 40,110 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,326 |
| Word Chain - Italy | 0 | - | 4.07 | 23,233 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,186 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,718 |
| Roman Emperors | 0 | - | 4.95 | 121,499 |
| Famous Nordic People | 0 | - | 4.34 | 20,356 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,651 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,153 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,425 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,585 |
| People on Money - England | 0 | - | 4.29 | 20,893 |
| Name a Valid English City | 0 | - | 4.19 | 16,845 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 281,116 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,733 |
| Australian Capitals | 0 | - | 4.92 | 62,866 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,469 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,903 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,442 |
| European Geography By Letter - D | 0 | - | 4.49 | 118,976 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,404 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,940 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,370 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,957 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,230 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,869 |
| Europe Map Quiz | 0 | - | 5.00 | 4,794,758 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,587 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,259 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,527 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,483 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,618 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,634 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,801 |
| Capitals of French Regions | 0 | - | 4.45 | 16,216 |
| Capitals of German States | 0 | - | 4.74 | 29,100 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,600 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,641 |
| Ancient Greek Words | 0 | - | 4.93 | 112,724 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,860 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 293,034 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,648 |
| European Physical Geography | 0 | - | 4.26 | 33,621 |
| Geography of Russia | 0 | - | 4.57 | 21,626 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,175 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,586 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,648 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,493 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,506 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,860 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,496 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,405 |
| Geography of the British Empire | 0 | - | 4.48 | 39,888 |
| Champions League Top 4 | 0 | - | 4.78 | 139,705 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,653 |
| Asia Map Quiz | 0 | - | 4.99 | 927,088 |
| Africa Map Quiz | 0 | - | 5.00 | 2,131,275 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,634 |
| Australia Map Quiz | 0 | - | 4.95 | 346,578 |
| United States Map Quiz | 0 | - | 4.98 | 4,174,140 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,452 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 93,007 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,344 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,675 |
| European Geography By Letter - E | 0 | - | 4.23 | 120,507 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,792 |
| European Geography By Letter - H | 0 | - | 4.30 | 97,459 |
| European Geography By Letter - G | 0 | - | 4.27 | 104,253 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,794 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,449 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,799 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,736 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,960 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 52,043 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,572 |
| European Geography A-Z | 0 | - | 4.29 | 49,531 |
| Country Codes of Europe | 0 | - | 3.45 | 13,857 |
| The Only European Country ... | 0 | - | 4.91 | 219,717 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,904 |
| European Geographic Groups of Four | 0 | - | 4.56 | 20,527 |
| Austria... or Australia? | 0 | - | 4.67 | 104,870 |
| Presidents of France | 0 | - | 4.25 | 24,384 |
| French Foods | 0 | - | 4.00 | 27,789 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,293 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,077 |
| Figures from Greek Mythology | 0 | - | 4.92 | 193,914 |
| Italian Inventions | 0 | - | 3.81 | 18,485 |
| Countries Italy Declared War On | 0 | - | 4.74 | 49,165 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,139 |
