| European Countries by First 2 Letters | 0 | - | 4.95 | 527,315 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,153 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,702 |
| States of Germany | 0 | - | 4.96 | 150,830 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,271 |
| Regions of Italy | 0 | - | 4.92 | 75,045 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,035 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,982 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,632 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,602 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,790 |
| Official European Union Languages | 0 | - | 4.97 | 237,462 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,200 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,148 |
| The Vikings! | 0 | - | 4.46 | 28,275 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,795 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,703 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,646 |
| History of Italy | 0 | - | 4.55 | 31,877 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,377 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,542 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,066 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,298 |
| Celtic Nations | 0 | - | 4.69 | 46,858 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,043 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,025 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,095 |
| Counties of England | 0 | - | 4.97 | 791,725 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 351,936 |
| Regions of France | 0 | - | 4.78 | 119,742 |
| France Immigration by Country | 0 | - | 4.72 | 76,132 |
| Famous Germans | 0 | - | 4.50 | 54,788 |
| German Groups of Things | 0 | - | 4.46 | 38,362 |
| Germany True or False? | 0 | - | 4.61 | 48,628 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,663 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,783 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,995 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,124 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,702 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,564 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,483 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,262 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,581 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,202 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,952 |
| History of Austria | 0 | - | 4.70 | 17,786 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,616 |
| Geography of the French Empire | 0 | - | 4.45 | 26,980 |
| The French Revolution | 0 | - | 4.46 | 23,846 |
| France Multiple Choice | 0 | - | 4.38 | 40,670 |
| History of France | 0 | - | 4.59 | 56,485 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,066 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,416 |
| The Portuguese Empire | 0 | - | 4.58 | 12,018 |
| American to British Word Translation | 0 | - | 4.13 | 137,891 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,787 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,257 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,494 |
| Champions League Winners | 0 | - | 4.92 | 999,669 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,458 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,224 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,851 |
| Departments of France | 0 | - | 4.93 | 53,151 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,418 |
| England or Wales? | 0 | - | 4.94 | 45,448 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,051 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,493 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,621 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,200 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,663 |
| Slavic Languages | 0 | - | 4.68 | 54,114 |
| Word Chain - France | 0 | - | 4.38 | 42,657 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,506 |
| Italian Foods | 0 | - | 4.31 | 72,395 |
| The Mafia Quiz | 0 | - | 4.46 | 23,232 |
| History of The Netherlands | 0 | - | 4.46 | 17,351 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,317 |
| Canary Islands | 0 | - | 4.61 | 17,428 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,320 |
| British Spellings | 0 | - | 4.07 | 99,333 |
| British Groups of Things | 0 | - | 4.25 | 82,747 |
| British Acronyms | 0 | - | 4.39 | 45,679 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,984 |
| Geography of Scotland | 0 | - | 4.63 | 21,525 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,053 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,605 |
| Geography of Germany | 0 | - | 4.35 | 17,121 |
| History of Germany | 0 | - | 4.39 | 52,696 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 643,867 |
| Name that Greek Letter | 0 | - | 4.93 | 322,294 |
| History of Spain | 0 | - | 4.29 | 21,034 |
| Languages of Spain | 0 | - | 4.36 | 23,212 |
| British to American Word Translation | 0 | - | 3.74 | 254,867 |
| British Foods by Description | 0 | - | 3.94 | 48,281 |
| British and American Word Differences | 0 | - | 2.64 | 46,811 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,537 |
| Bridges of London | 0 | - | 4.17 | 10,069 |
| British Sport Trivia | 0 | - | 4.37 | 20,393 |
| Famous Welsh People | 0 | - | 4.21 | 9,788 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,150 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,475 |
| History of Russia Quiz | 0 | - | 4.49 | 31,829 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,622 |
| Famous French People | 0 | - | 4.12 | 28,102 |
| Movies Set in France | 0 | - | 4.26 | 13,093 |
| French Inventions | 0 | - | 4.08 | 13,873 |
| History of Paris | 0 | - | 4.24 | 13,627 |
| Word Chain - Germany | 0 | - | 4.31 | 22,513 |
| The Trojan War | 0 | - | 4.83 | 39,530 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,000 |
| Word Chain - Italy | 0 | - | 4.07 | 23,128 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,062 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,218 |
| Roman Emperors | 0 | - | 4.95 | 119,014 |
| Famous Nordic People | 0 | - | 4.34 | 19,949 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,714 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,561 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,677 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,274 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,491 |
| People on Money - England | 0 | - | 4.29 | 16,581 |
| Name a Valid English City | 0 | - | 4.19 | 16,661 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,468 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,961 |
| Australian Capitals | 0 | - | 4.92 | 62,642 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,625 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,083 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,053 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,934 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,397 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,224 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,990 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,764 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,290 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,528 |
| Europe Map Quiz | 0 | - | 5.00 | 4,741,821 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,092 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,729 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,037 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,082 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,753 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,728 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,105 |
| Capitals of French Regions | 0 | - | 4.45 | 16,011 |
| Capitals of German States | 0 | - | 4.74 | 28,881 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,174 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,798 |
| Ancient Greek Words | 0 | - | 4.93 | 110,999 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,787 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,005 |
| Africa Map Quiz | 0 | - | 5.00 | 2,109,039 |
| Oceania Map Quiz | 0 | - | 4.98 | 637,638 |
| European Physical Geography | 0 | - | 4.26 | 33,411 |
| Geography of Russia | 0 | - | 4.57 | 21,462 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,836 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,742 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,771 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,378 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,439 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,252 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,025 |
| Geography of the British Empire | 0 | - | 4.48 | 39,559 |
| Champions League Top 4 | 0 | - | 4.77 | 134,668 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,443,148 |
| Asia Map Quiz | 0 | - | 4.99 | 909,822 |
| Countries of Africa | 0 | - | 5.00 | 2,517,307 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,153 |
| African East Coast | 0 | - | 4.96 | 95,399 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,261 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,092 |
| Australia Map Quiz | 0 | - | 4.94 | 343,046 |
| United States Map Quiz | 0 | - | 4.98 | 4,146,657 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,826 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,415 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,690 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,998 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,386 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,814 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,053 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,677 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,633 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,323 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,046 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,391 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,480 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,619 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,121 |
| European Geography A-Z | 0 | - | 4.28 | 49,086 |
| Country Codes of Europe | 0 | - | 3.46 | 13,667 |
| The Only European Country ... | 0 | - | 4.91 | 214,805 |
| European Countries NOT in NATO | 0 | - | 4.87 | 60,103 |
| Austria... or Australia? | 0 | - | 4.68 | 104,043 |
| Presidents of France | 0 | - | 4.25 | 23,955 |
| French Foods | 0 | - | 4.00 | 27,627 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,848 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,823 |
| Figures from Greek Mythology | 0 | - | 4.91 | 185,604 |
| Italian Inventions | 0 | - | 3.81 | 18,421 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,105 |
| Kings of Spain Quiz | 0 | - | 4.14 | 13,984 |
