| European Countries by First 2 Letters | 0 | - | 4.95 | 529,264 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,331 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,962 |
| States of Germany | 0 | - | 4.96 | 152,353 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,979 |
| Regions of Italy | 0 | - | 4.92 | 75,795 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,077 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,857 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,140 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,689 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,082 |
| Official European Union Languages | 0 | - | 4.97 | 238,375 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,767 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,963 |
| The Vikings! | 0 | - | 4.46 | 28,339 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,104 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,949 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,808 |
| History of Italy | 0 | - | 4.55 | 31,962 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,737 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,645 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,211 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,379 |
| Celtic Nations | 0 | - | 4.69 | 46,928 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,336 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,301 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 171,405 |
| Counties of England | 0 | - | 4.97 | 796,063 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 355,476 |
| Regions of France | 0 | - | 4.75 | 120,665 |
| France Immigration by Country | 0 | - | 4.70 | 76,474 |
| Famous Germans | 0 | - | 4.50 | 55,262 |
| German Groups of Things | 0 | - | 4.46 | 38,468 |
| Germany True or False? | 0 | - | 4.61 | 48,778 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,965 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,430 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,310 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,255 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,183 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,042 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,463 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 78,232 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 80,891 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,921 |
| History of Austria | 0 | - | 4.70 | 17,854 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,332 |
| Geography of the French Empire | 0 | - | 4.45 | 27,048 |
| The French Revolution | 0 | - | 4.46 | 23,926 |
| France Multiple Choice | 0 | - | 4.39 | 40,730 |
| History of France | 0 | - | 4.59 | 56,935 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,726 |
| The Portuguese Empire | 0 | - | 4.58 | 12,060 |
| American to British Word Translation | 0 | - | 4.14 | 138,953 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,882 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,951 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,488 |
| Champions League Winners | 0 | - | 4.92 | 1,005,853 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,037 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,658 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,961 |
| Departments of France | 0 | - | 4.93 | 54,027 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,537 |
| England or Wales? | 0 | - | 4.94 | 45,660 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,207 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,588 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,651 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,645 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,828 |
| Slavic Languages | 0 | - | 4.68 | 54,329 |
| Famous French People | 0 | - | 4.06 | 35,455 |
| Word Chain - France | 0 | - | 4.38 | 42,768 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,598 |
| Italian Foods | 0 | - | 4.30 | 72,742 |
| The Mafia Quiz | 0 | - | 4.46 | 23,314 |
| History of The Netherlands | 0 | - | 4.46 | 17,428 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,449 |
| Canary Islands | 0 | - | 4.62 | 17,474 |
| Switzerland Immigration by Country | 0 | - | 4.68 | 29,674 |
| British Spellings | 0 | - | 4.06 | 99,437 |
| British Groups of Things | 0 | - | 4.25 | 82,859 |
| British Acronyms | 0 | - | 4.40 | 45,784 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,032 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,751 |
| Geography of Scotland | 0 | - | 4.63 | 21,610 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,412 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,753 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,471 |
| Geography of Germany | 0 | - | 4.35 | 17,178 |
| History of Germany | 0 | - | 4.39 | 52,802 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,919 |
| Name that Greek Letter | 0 | - | 4.93 | 323,328 |
| History of Spain | 0 | - | 4.23 | 21,079 |
| Languages of Spain | 0 | - | 4.36 | 23,309 |
| British to American Word Translation | 0 | - | 3.74 | 255,051 |
| British Foods by Description | 0 | - | 3.94 | 48,326 |
| British and American Word Differences | 0 | - | 2.63 | 46,871 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,587 |
| Bridges of London | 0 | - | 4.17 | 10,099 |
| British Sport Trivia | 0 | - | 4.37 | 20,453 |
| Famous Welsh People | 0 | - | 4.29 | 11,457 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,069 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,003 |
| History of Russia Quiz | 0 | - | 4.47 | 31,907 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,715 |
| Movies Set in France | 0 | - | 4.26 | 13,118 |
| French Inventions | 0 | - | 4.08 | 13,896 |
| History of Paris | 0 | - | 4.24 | 13,644 |
| Word Chain - Germany | 0 | - | 4.31 | 22,580 |
| The Trojan War | 0 | - | 4.83 | 39,699 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,742 |
| Word Chain - Italy | 0 | - | 4.07 | 23,158 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,097 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,486 |
| Roman Emperors | 0 | - | 4.95 | 119,898 |
| Famous Nordic People | 0 | - | 4.34 | 20,092 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,770 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,613 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,841 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,337 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,525 |
| People on Money - England | 0 | - | 4.29 | 16,608 |
| Name a Valid English City | 0 | - | 4.19 | 16,714 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,936 |
| Australian Capitals | 0 | - | 4.92 | 62,715 |
| European Geography By Letter - A | 0 | - | 4.52 | 145,858 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 114,825 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,594 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,298 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,309 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,385 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,379 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,690 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,579 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,904 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,290 |
| Europe Map Quiz | 0 | - | 5.00 | 4,760,133 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,248 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,916 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,200 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,218 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,479 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,412 |
| Capitals of French Regions | 0 | - | 4.45 | 16,060 |
| Capitals of German States | 0 | - | 4.74 | 28,947 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,313 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,476 |
| Ancient Greek Words | 0 | - | 4.93 | 111,510 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,016 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,606 |
| Africa Map Quiz | 0 | - | 5.00 | 2,116,847 |
| Oceania Map Quiz | 0 | - | 4.98 | 641,670 |
| European Physical Geography | 0 | - | 4.26 | 33,495 |
| Geography of Russia | 0 | - | 4.57 | 21,523 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,938 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,818 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,093 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,753 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,645 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,339 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,416 |
| Geography of the British Empire | 0 | - | 4.48 | 39,657 |
| Champions League Top 4 | 0 | - | 4.77 | 136,221 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,447,736 |
| Asia Map Quiz | 0 | - | 4.99 | 915,955 |
| Countries of Africa | 0 | - | 5.00 | 2,534,435 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,756 |
| African East Coast | 0 | - | 4.96 | 95,976 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,799 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,622 |
| Australia Map Quiz | 0 | - | 4.95 | 344,239 |
| United States Map Quiz | 0 | - | 4.98 | 4,156,639 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,079 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,632 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,859 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,285 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,417 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,734 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,882 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,550 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,373 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,016 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,612 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,847 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,656 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,103 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,101 |
| European Geography A-Z | 0 | - | 4.29 | 49,244 |
| Country Codes of Europe | 0 | - | 3.43 | 13,706 |
| The Only European Country ... | 0 | - | 4.91 | 216,415 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,002 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,110 |
| Austria... or Australia? | 0 | - | 4.68 | 104,306 |
| Presidents of France | 0 | - | 4.25 | 24,094 |
| French Foods | 0 | - | 4.00 | 27,695 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,972 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,902 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,775 |
| Italian Inventions | 0 | - | 3.81 | 18,437 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,302 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,027 |
