| European Countries by First 2 Letters | 0 | - | 4.95 | 533,116 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,758 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,513 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,486 |
| States of Germany | 0 | - | 4.95 | 154,963 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,821 |
| Regions of Italy | 0 | - | 4.92 | 77,274 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,924 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,609 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,907 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,874 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,872 |
| Official European Union Languages | 0 | - | 4.97 | 240,392 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,843 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,430 |
| History of Austria | 0 | - | 4.70 | 17,992 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,393 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,113 |
| History of Italy | 0 | - | 4.55 | 32,186 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,531 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,854 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,470 |
| Celtic Nations | 0 | - | 4.61 | 47,130 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,148 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,219 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,575 |
| Counties of England | 0 | - | 4.97 | 804,396 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,752 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 23,538 |
| Regions of France | 0 | - | 4.70 | 122,424 |
| France Immigration by Country | 0 | - | 4.70 | 77,017 |
| Famous Germans | 0 | - | 4.50 | 55,880 |
| German Groups of Things | 0 | - | 4.47 | 38,677 |
| Germany True or False? | 0 | - | 4.61 | 49,073 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,595 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,550 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,942 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,478 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,968 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,104 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,919 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,831 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 89,097 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,192 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,962 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,828 |
| Geography of the French Empire | 0 | - | 4.45 | 27,236 |
| The French Revolution | 0 | - | 4.47 | 24,169 |
| France Multiple Choice | 0 | - | 4.39 | 40,876 |
| History of France | 0 | - | 4.61 | 57,735 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,991 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,578 |
| The Vikings! | 0 | - | 4.46 | 28,425 |
| The Portuguese Empire | 0 | - | 4.58 | 12,118 |
| American to British Word Translation | 0 | - | 4.14 | 139,841 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,094 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,651 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,310 |
| Champions League Winners | 0 | - | 4.92 | 1,018,172 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,379 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,361 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,302 |
| Departments of France | 0 | - | 4.93 | 55,417 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,784 |
| England or Wales? | 0 | - | 4.94 | 46,060 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,507 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,799 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,742 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,455 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 124,177 |
| Slavic Languages | 0 | - | 4.67 | 54,787 |
| Famous French People | 0 | - | 4.05 | 36,167 |
| Word Chain - France | 0 | - | 4.38 | 42,964 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,764 |
| Italian Foods | 0 | - | 4.30 | 73,401 |
| The Mafia Quiz | 0 | - | 4.46 | 23,454 |
| History of The Netherlands | 0 | - | 4.46 | 17,572 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,667 |
| Canary Islands | 0 | - | 4.62 | 17,549 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,167 |
| British Spellings | 0 | - | 4.06 | 99,631 |
| British Groups of Things | 0 | - | 4.26 | 83,044 |
| British Acronyms | 0 | - | 4.40 | 45,979 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,132 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,223 |
| Geography of Scotland | 0 | - | 4.63 | 21,826 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,068 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,289 |
| Geography of Germany | 0 | - | 4.36 | 17,426 |
| History of Germany | 0 | - | 4.39 | 53,004 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,059 |
| Name that Greek Letter | 0 | - | 4.93 | 325,328 |
| History of Spain | 0 | - | 4.23 | 21,178 |
| Languages of Spain | 0 | - | 4.36 | 23,473 |
| British to American Word Translation | 0 | - | 3.74 | 255,403 |
| British Foods by Description | 0 | - | 3.94 | 48,416 |
| British and American Word Differences | 0 | - | 2.63 | 46,939 |
| British Geography Quiz #2 | 0 | - | 4.30 | 28,258 |
| Bridges of London | 0 | - | 4.17 | 10,151 |
| British Sport Trivia | 0 | - | 4.39 | 20,554 |
| Famous Welsh People | 0 | - | 4.34 | 11,727 |
| Malta Country Quiz | 0 | - | 4.81 | 31,266 |
| Top European Languages on a Map | 0 | - | 4.77 | 133,025 |
| History of Russia Quiz | 0 | - | 4.47 | 32,028 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,903 |
| Movies Set in France | 0 | - | 4.26 | 13,159 |
| French Inventions | 0 | - | 4.10 | 13,933 |
| History of Paris | 0 | - | 4.24 | 13,687 |
| Word Chain - Germany | 0 | - | 4.31 | 22,699 |
| The Trojan War | 0 | - | 4.83 | 40,086 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,253 |
| Word Chain - Italy | 0 | - | 4.07 | 23,231 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,183 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,703 |
| Roman Emperors | 0 | - | 4.95 | 121,458 |
| Famous Nordic People | 0 | - | 4.34 | 20,349 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,651 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,149 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,424 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,584 |
| People on Money - England | 0 | - | 4.29 | 20,071 |
| Name a Valid English City | 0 | - | 4.19 | 16,837 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 281,060 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,687 |
| Australian Capitals | 0 | - | 4.92 | 62,863 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,354 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,765 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,274 |
| European Geography By Letter - D | 0 | - | 4.49 | 118,789 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,280 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,798 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,285 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,893 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,171 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,790 |
| Europe Map Quiz | 0 | - | 5.00 | 4,793,835 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,579 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,251 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,517 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,475 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,569 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,621 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,795 |
| Capitals of French Regions | 0 | - | 4.45 | 16,210 |
| Capitals of German States | 0 | - | 4.74 | 29,099 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,587 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,520 |
| Ancient Greek Words | 0 | - | 4.93 | 112,684 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,760 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 293,012 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,477 |
| European Physical Geography | 0 | - | 4.26 | 33,618 |
| Geography of Russia | 0 | - | 4.57 | 21,621 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,167 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,495 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,628 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,443 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,469 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,497 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,855 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,492 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,389 |
| Geography of the British Empire | 0 | - | 4.48 | 39,882 |
| Champions League Top 4 | 0 | - | 4.78 | 139,612 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,526 |
| Asia Map Quiz | 0 | - | 4.99 | 926,890 |
| Africa Map Quiz | 0 | - | 5.00 | 2,130,940 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.96 | 51,620 |
| Australia Map Quiz | 0 | - | 4.95 | 346,527 |
| United States Map Quiz | 0 | - | 4.98 | 4,173,755 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,384 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,998 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,274 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,623 |
| European Geography By Letter - E | 0 | - | 4.23 | 115,404 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,657 |
| European Geography By Letter - H | 0 | - | 4.30 | 97,351 |
| European Geography By Letter - G | 0 | - | 4.27 | 104,129 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,700 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,348 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,727 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,693 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,951 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,994 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,521 |
| European Geography A-Z | 0 | - | 4.29 | 49,526 |
| Country Codes of Europe | 0 | - | 3.45 | 13,850 |
| The Only European Country ... | 0 | - | 4.91 | 219,641 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,859 |
| European Geographic Groups of Four | 0 | - | 4.56 | 20,497 |
| Austria... or Australia? | 0 | - | 4.67 | 104,851 |
| Presidents of France | 0 | - | 4.25 | 24,372 |
| French Foods | 0 | - | 4.00 | 27,788 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,285 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,075 |
| Figures from Greek Mythology | 0 | - | 4.91 | 192,750 |
| Italian Inventions | 0 | - | 3.81 | 18,483 |
| Countries Italy Declared War On | 0 | - | 4.74 | 48,285 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,138 |
| Biggest Immigrant Groups by Decade in the UK | 0 | - | 4.63 | 25,868 |
