| European Countries by First 2 Letters | 0 | - | 4.96 | 520,303 |
| Germany Multiple Choice | 0 | - | 4.83 | 53,456 |
| States of Germany | 0 | - | 4.95 | 145,360 |
| Germany Immigration by Country | 0 | - | 4.87 | 78,524 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 30,608 |
| Regions of Italy | 0 | - | 4.92 | 72,175 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 42,069 |
| Regions of Spain Quiz | 0 | - | 4.90 | 109,571 |
| Cantons of Switzerland | 0 | - | 4.97 | 48,395 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,129 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 67,504 |
| Official European Union Languages | 0 | - | 4.98 | 233,633 |
| European Countries in their Native Language | 0 | - | 4.99 | 154,818 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 419,502 |
| The Vikings! | 0 | - | 4.46 | 28,082 |
| Europe Geography Decoder | 0 | - | 4.86 | 68,599 |
| Countries that Beat Switzerland | 0 | - | 4.87 | 41,071 |
| Italy Multiple Choice | 0 | - | 4.74 | 101,920 |
| Geography of the Dutch Empire | 0 | - | 4.68 | 34,145 |
| Countries of the Spanish Empire | 0 | - | 4.51 | 76,688 |
| Add A Letter - Make a European City | 0 | - | 4.89 | 22,909 |
| Celtic Nations | 0 | - | 4.69 | 46,527 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.84 | 85,829 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 304,541 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 160,081 |
| Counties of England | 0 | - | 4.97 | 776,179 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 340,175 |
| Regions of France | 0 | - | 4.75 | 116,110 |
| France Immigration by Country | 0 | - | 4.73 | 75,029 |
| Famous Germans | 0 | - | 4.49 | 53,236 |
| German Groups of Things | 0 | - | 4.46 | 38,005 |
| Germany True or False? | 0 | - | 4.63 | 48,032 |
| Largest Islands of Greece | 0 | - | 4.58 | 46,355 |
| Famous Italians by Clue | 0 | - | 4.45 | 86,773 |
| Provinces of the Netherlands | 0 | - | 4.78 | 39,483 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 47,770 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 100,626 |
| Catholic Countries in Europe | 0 | - | 4.83 | 92,657 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.70 | 57,486 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 74,068 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 77,578 |
| Federal Subjects of Russia | 0 | - | 4.95 | 139,197 |
| History of Austria | 0 | - | 4.70 | 17,505 |
| Regions of France Map Quiz | 0 | - | 4.96 | 140,614 |
| Geography of the French Empire | 0 | - | 4.51 | 26,578 |
| The French Revolution | 0 | - | 4.46 | 23,317 |
| France Multiple Choice | 0 | - | 4.38 | 40,375 |
| History of France Quiz | 0 | - | 4.56 | 42,414 |
| States of Germany Map Quiz | 0 | - | 4.91 | 129,799 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.42 | 23,169 |
| History of Italy | 0 | - | 4.55 | 31,515 |
| Sweden Immigration by Country | 0 | - | 4.54 | 55,036 |
| The Portuguese Empire | 0 | - | 4.54 | 11,875 |
| American to British Word Translation | 0 | - | 4.05 | 116,135 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,383 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 91,587 |
| Counties of England Map Quiz | 0 | - | 4.97 | 303,220 |
| Champions League Winners | 0 | - | 4.92 | 979,495 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 225,918 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 269,967 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 161,766 |
| Departments of France | 0 | - | 4.92 | 49,684 |
| Countries Surrounding Rome | 0 | - | 4.97 | 48,949 |
| England or Wales? | 0 | - | 4.94 | 44,600 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 125,639 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,082 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,467 |
| Word Scramble - European Countries | 0 | - | 4.73 | 138,337 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 109,517 |
| Slavic Languages | 0 | - | 4.68 | 53,257 |
| Word Chain - France | 0 | - | 4.38 | 42,241 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,147 |
| Italian Foods | 0 | - | 4.30 | 71,072 |
| The Mafia Quiz | 0 | - | 4.46 | 23,001 |
| History of The Netherlands | 0 | - | 4.46 | 17,025 |
| Spanish Immigration by Country | 0 | - | 4.61 | 54,813 |
| Canary Islands | 0 | - | 4.61 | 17,263 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 28,187 |
| British Spellings Quiz | 0 | - | 4.08 | 98,395 |
| British Groups of Things | 0 | - | 4.25 | 82,417 |
| British Acronyms | 0 | - | 4.39 | 45,299 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,772 |
| Geography of Scotland | 0 | - | 4.63 | 21,176 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 63,587 |
| French Geography Quiz #1 | 0 | - | 4.88 | 33,994 |
| Geography of Germany | 0 | - | 4.33 | 16,848 |
| History of Germany | 0 | - | 4.38 | 52,210 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 630,047 |
| Name that Greek Letter | 0 | - | 4.93 | 317,765 |
| History of Spain | 0 | - | 4.29 | 20,815 |
| Languages of Spain | 0 | - | 4.36 | 22,887 |
| British to American Word Translation | 0 | - | 3.75 | 252,680 |
| British Foods | 0 | - | 3.88 | 48,091 |
| British and American Word Differences | 0 | - | 2.67 | 45,768 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,356 |
| Bridges of London | 0 | - | 4.17 | 9,960 |
| British Sport Trivia | 0 | - | 4.36 | 20,178 |
| Famous Welsh People | 0 | - | 4.21 | 9,686 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 263,646 |
| Top European Languages on a Map | 0 | - | 4.78 | 129,399 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,245 |
| Famous French People | 0 | - | 4.14 | 25,107 |
| Movies Set in France | 0 | - | 4.26 | 12,998 |
| French Inventions | 0 | - | 4.08 | 13,775 |
| History of Paris | 0 | - | 4.24 | 13,545 |
| Word Chain - Germany | 0 | - | 4.30 | 22,298 |
| The Trojan War | 0 | - | 4.81 | 38,812 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.83 | 107,747 |
| Word Chain - Italy | 0 | - | 4.07 | 22,936 |
| Embarrassing Chapters in Italian History | 0 | - | 4.23 | 11,883 |
| Ancient Roman Trivia #1 | 0 | - | 4.84 | 82,902 |
| Roman Emperors | 0 | - | 4.96 | 114,683 |
| Famous Nordic People | 0 | - | 4.36 | 13,408 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,452 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,424 |
| Invasions of Great Britain | 0 | - | 4.51 | 58,851 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,081 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,336 |
| People on Money - England | 0 | - | 4.29 | 16,485 |
| Name a Valid English City | 0 | - | 4.19 | 16,449 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 30,267 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 273,904 |
| Australian Capitals | 0 | - | 4.92 | 62,341 |
| European Geography By Letter - A | 0 | - | 4.56 | 131,150 |
| European Geography By Letter - B #1 | 0 | - | 4.70 | 109,610 |
| European Geography By Letter - C | 0 | - | 4.46 | 110,746 |
| European Geography By Letter - D | 0 | - | 4.51 | 105,455 |
| European Geography By Letter - L | 0 | - | 4.51 | 110,790 |
| European Geography By Letter - M | 0 | - | 4.52 | 126,626 |
| European Geography By Letter - P #1 | 0 | - | 4.78 | 95,123 |
| European Geography By Letter - N | 0 | - | 4.44 | 98,702 |
| European Geography By Letter - R | 0 | - | 4.41 | 91,649 |
| European Geography By Letter - V | 0 | - | 4.43 | 91,144 |
| European Geography By Letter - T | 0 | - | 4.41 | 79,721 |
| Europe Map Quiz | 0 | - | 5.00 | 4,670,932 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,468 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,024 |
| Europe Geography Quiz #4 | 0 | - | 4.56 | 69,445 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,498 |
| European Geography By Letter - S #1 | 0 | - | 4.61 | 98,446 |
| Four Letter European Geography #1 | 0 | - | 4.45 | 26,231 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 18,873 |
| Capitals of French Regions | 0 | - | 4.43 | 15,807 |
| Capitals of German States | 0 | - | 4.70 | 28,550 |
| Chancellors of Germany, 1949–present | 0 | - | 4.58 | 22,674 |
| Olympian Gods Quiz | 0 | - | 4.96 | 478,816 |
| Ancient Greek Words | 0 | - | 4.92 | 108,545 |
| Beatles Songs Quiz | 0 | - | 4.97 | 229,541 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 287,870 |
| Africa Map Quiz | 0 | - | 5.00 | 2,081,406 |
| Oceania Map Quiz | 0 | - | 4.98 | 622,756 |
| European Physical Geography | 0 | - | 4.26 | 33,152 |
| History of Russia Quiz | 0 | - | 4.49 | 31,566 |
| Geography of Russia | 0 | - | 4.57 | 21,230 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,412 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 426,139 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 54,450 |
| United Kingdom A-Z | 0 | - | 4.53 | 86,415 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,054 |
| Wives of King Henry VIII | 0 | - | 4.55 | 52,838 |
| Countries the UK Declared War On | 0 | - | 4.61 | 120,522 |
| Geography of the British Empire | 0 | - | 4.51 | 39,080 |
| Champions League Top 4 | 0 | - | 4.74 | 129,446 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,425,659 |
| Asia Map Quiz | 0 | - | 4.99 | 888,336 |
| Countries of Africa | 0 | - | 5.00 | 2,452,505 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 43,873 |
| African East Coast | 0 | - | 4.96 | 93,329 |
| Western Africa Map Quiz | 0 | - | 4.97 | 71,249 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 48,274 |
| Australia Map Quiz | 0 | - | 4.94 | 339,121 |
| United States Map Quiz | 0 | - | 4.98 | 4,113,232 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 205,350 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 91,097 |
| Countries That Use the Euro | 0 | - | 4.96 | 98,963 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 358,624 |
| European Geography By Letter - E | 0 | - | 4.23 | 111,105 |
| European Geography By Letter - F | 0 | - | 4.16 | 90,595 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,026 |
| European Geography By Letter - G | 0 | - | 4.25 | 100,348 |
| European Geography By Letter - I | 0 | - | 4.10 | 93,513 |
| European Geography By Letter - K | 0 | - | 4.14 | 68,400 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,243 |
| European Geography by Letter - W | 0 | - | 4.20 | 81,766 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 62,922 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 49,947 |
| 10 Easternmost Countries in Europe | 0 | - | 4.88 | 110,308 |
| European Geography A-Z | 0 | - | 4.27 | 48,487 |
| Country Codes of Europe | 0 | - | 3.44 | 13,486 |
| The Only European Country ... | 0 | - | 4.92 | 207,362 |
| European Countries NOT in NATO | 0 | - | 4.89 | 56,482 |
| Austria... or Australia? | 0 | - | 4.69 | 102,988 |
| Presidents of France | 0 | - | 4.25 | 23,308 |
| French Foods | 0 | - | 4.00 | 27,413 |
| Ancient Greek Trivia | 0 | - | 4.61 | 66,228 |
| Figures from Greek Mythology | 0 | - | 4.90 | 179,868 |
| Italian Inventions | 0 | - | 3.81 | 18,356 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,543 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,813 |
| British Monopoly Board | 0 | - | 4.51 | 40,758 |
