| Regions of Italy | 0 | - | 4.92 | 75,792 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,254 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,331 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,962 |
| History of Italy | 0 | - | 4.55 | 31,962 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,734 |
| States of Germany | 0 | - | 4.96 | 152,343 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,978 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,074 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,855 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,137 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,687 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,078 |
| Official European Union Languages | 0 | - | 4.97 | 238,369 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,765 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,424 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,537 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,946 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,595 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,949 |
| Italian Foods | 0 | - | 4.30 | 72,740 |
| The Mafia Quiz | 0 | - | 4.46 | 23,314 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,808 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,486 |
| Roman Emperors | 0 | - | 4.95 | 119,894 |
| 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 | 87,335 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,298 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 171,378 |
| Counties of England | 0 | - | 4.97 | 796,007 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 355,452 |
| Regions of France | 0 | - | 4.75 | 120,657 |
| France Immigration by Country | 0 | - | 4.70 | 76,474 |
| Famous Germans | 0 | - | 4.50 | 55,259 |
| German Groups of Things | 0 | - | 4.46 | 38,468 |
| Germany True or False? | 0 | - | 4.61 | 48,777 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,964 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,309 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,255 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,181 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,035 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,463 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 78,199 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 80,888 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,905 |
| History of Austria | 0 | - | 4.70 | 17,854 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,318 |
| Geography of the French Empire | 0 | - | 4.45 | 27,047 |
| The French Revolution | 0 | - | 4.46 | 23,925 |
| France Multiple Choice | 0 | - | 4.39 | 40,729 |
| History of France | 0 | - | 4.59 | 56,934 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,721 |
| Word Chain - Italy | 0 | - | 4.07 | 23,157 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,097 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,091 |
| The Vikings! | 0 | - | 4.46 | 28,338 |
| The Portuguese Empire | 0 | - | 4.58 | 12,060 |
| American to British Word Translation | 0 | - | 4.14 | 138,949 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,882 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,947 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,415 |
| Champions League Winners | 0 | - | 4.92 | 1,005,808 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,027 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,635 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,958 |
| Departments of France | 0 | - | 4.93 | 54,017 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,808 |
| England or Wales? | 0 | - | 4.94 | 45,658 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,195 |
| 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 | 141,641 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,823 |
| Slavic Languages | 0 | - | 4.68 | 54,327 |
| Famous French People | 0 | - | 4.06 | 35,447 |
| Word Chain - France | 0 | - | 4.38 | 42,768 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,301 |
| History of The Netherlands | 0 | - | 4.46 | 17,428 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,448 |
| Canary Islands | 0 | - | 4.62 | 17,474 |
| Switzerland Immigration by Country | 0 | - | 4.68 | 29,673 |
| British Spellings | 0 | - | 4.06 | 99,437 |
| British Groups of Things | 0 | - | 4.25 | 82,859 |
| British Acronyms | 0 | - | 4.40 | 45,783 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,032 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,751 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,409 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,752 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,470 |
| Geography of Germany | 0 | - | 4.35 | 17,176 |
| History of Germany | 0 | - | 4.39 | 52,802 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,908 |
| Name that Greek Letter | 0 | - | 4.93 | 323,324 |
| Italian Inventions | 0 | - | 3.81 | 18,437 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,724 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,895 |
| Roman Names for Places | 0 | - | 4.62 | 58,252 |
| History of Spain | 0 | - | 4.23 | 21,079 |
| Languages of Spain | 0 | - | 4.36 | 23,309 |
| British to American Word Translation | 0 | - | 3.74 | 255,049 |
| 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 | 268,065 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,000 |
| 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 | 22,579 |
| The Trojan War | 0 | - | 4.83 | 39,697 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,741 |
| Famous Nordic People | 0 | - | 4.34 | 20,091 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,613 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,840 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,336 |
| 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 | 16,713 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,932 |
| Australian Capitals | 0 | - | 4.92 | 62,715 |
| European Geography By Letter - A | 0 | - | 4.52 | 145,829 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 114,369 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,563 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,273 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,299 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,370 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,369 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,681 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,572 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,897 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,277 |
| Europe Map Quiz | 0 | - | 5.00 | 4,760,045 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,247 |
| 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 | 100,472 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,411 |
| Capitals of French Regions | 0 | - | 4.45 | 16,059 |
| Capitals of German States | 0 | - | 4.74 | 28,946 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,313 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,464 |
| Ancient Greek Words | 0 | - | 4.93 | 111,508 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,177 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,003 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,603 |
| Africa Map Quiz | 0 | - | 5.00 | 2,116,737 |
| Oceania Map Quiz | 0 | - | 4.98 | 641,646 |
| European Physical Geography | 0 | - | 4.26 | 33,495 |
| Geography of Russia | 0 | - | 4.57 | 21,522 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,936 |
| Italian History A-Z | 0 | - | 4.21 | 17,698 |
| Serie A Champions | 0 | - | 4.29 | 58,231 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,076 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,101 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,712 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,644 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,339 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,415 |
| Geography of the British Empire | 0 | - | 4.48 | 39,655 |
| Champions League Top 4 | 0 | - | 4.77 | 136,218 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,447,728 |
| Asia Map Quiz | 0 | - | 4.99 | 915,940 |
| Countries of Africa | 0 | - | 5.00 | 2,534,347 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,755 |
| African East Coast | 0 | - | 4.96 | 95,973 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,795 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,609 |
| Australia Map Quiz | 0 | - | 4.95 | 344,229 |
| United States Map Quiz | 0 | - | 4.98 | 4,156,569 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,069 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,632 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,842 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,277 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,401 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,717 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,871 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,539 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,360 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,007 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,604 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,838 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,656 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,094 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,095 |
| European Geography A-Z | 0 | - | 4.29 | 49,241 |
| Country Codes of Europe | 0 | - | 3.43 | 13,706 |
| The Only European Country ... | 0 | - | 4.91 | 216,404 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,998 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,109 |
| Austria... or Australia? | 0 | - | 4.68 | 104,304 |
| Presidents of France | 0 | - | 4.25 | 24,094 |
