| European Countries by First 2 Letters | 0 | - | 4.95 | 529,607 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,363 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,016 |
| States of Germany | 0 | - | 4.96 | 152,639 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,050 |
| Regions of Italy | 0 | - | 4.92 | 75,910 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,181 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,964 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,219 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,704 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,143 |
| Official European Union Languages | 0 | - | 4.97 | 238,543 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,876 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,259 |
| The Vikings! | 0 | - | 4.46 | 28,344 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,992 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,838 |
| History of Italy | 0 | - | 4.55 | 31,979 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,793 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,663 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,240 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,387 |
| Celtic Nations | 0 | - | 4.69 | 46,951 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,384 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,592 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 171,933 |
| Regions of France | 0 | - | 4.72 | 120,817 |
| France Immigration by Country | 0 | - | 4.70 | 76,529 |
| Famous Germans | 0 | - | 4.50 | 55,303 |
| German Groups of Things | 0 | - | 4.46 | 38,480 |
| Germany True or False? | 0 | - | 4.61 | 48,811 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,033 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,507 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,364 |
| Greenland... or Iceland? | 0 | - | 4.50 | 43,776 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,274 |
| Counties of England | 0 | - | 4.97 | 796,945 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,257 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 356,082 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,150 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,623 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 80,999 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,297 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,457 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,835 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,011 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,662 |
| Champions League Winners | 0 | - | 4.92 | 1,006,937 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,499 |
| History of Austria | 0 | - | 4.70 | 17,863 |
| Geography of the French Empire | 0 | - | 4.45 | 27,061 |
| The French Revolution | 0 | - | 4.47 | 23,937 |
| France Multiple Choice | 0 | - | 4.39 | 40,741 |
| History of France | 0 | - | 4.59 | 56,992 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,134 |
| The Portuguese Empire | 0 | - | 4.58 | 12,066 |
| American to British Word Translation | 0 | - | 4.14 | 139,082 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,899 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,302 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,857 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,155 |
| Famous French People | 0 | - | 4.06 | 35,595 |
| Departments of France | 0 | - | 4.93 | 54,135 |
| Word Chain - France | 0 | - | 4.38 | 42,782 |
| Italian Foods | 0 | - | 4.30 | 72,789 |
| The Mafia Quiz | 0 | - | 4.46 | 23,323 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,549 |
| History of The Netherlands | 0 | - | 4.46 | 17,437 |
| Canary Islands | 0 | - | 4.62 | 17,482 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,711 |
| British Spellings | 0 | - | 4.06 | 99,455 |
| British Groups of Things | 0 | - | 4.25 | 82,869 |
| British Acronyms | 0 | - | 4.40 | 45,801 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,036 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,817 |
| Geography of Scotland | 0 | - | 4.63 | 21,620 |
| England or Wales? | 0 | - | 4.94 | 45,699 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,385 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,604 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,656 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,706 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,997 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,460 |
| Slavic Languages | 0 | - | 4.68 | 54,372 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,776 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,485 |
| Geography of Germany | 0 | - | 4.35 | 17,188 |
| History of Germany | 0 | - | 4.39 | 52,823 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 647,556 |
| Name that Greek Letter | 0 | - | 4.93 | 323,476 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,619 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,470 |
| History of Spain | 0 | - | 4.23 | 21,090 |
| Languages of Spain | 0 | - | 4.36 | 23,320 |
| British to American Word Translation | 0 | - | 3.74 | 255,085 |
| British Foods by Description | 0 | - | 3.94 | 48,331 |
| British and American Word Differences | 0 | - | 2.63 | 46,881 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,595 |
| Bridges of London | 0 | - | 4.17 | 10,106 |
| British Sport Trivia | 0 | - | 4.37 | 20,461 |
| Famous Welsh People | 0 | - | 4.31 | 11,499 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,231 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,107 |
| History of Russia Quiz | 0 | - | 4.47 | 31,919 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,735 |
| Movies Set in France | 0 | - | 4.26 | 13,121 |
| French Inventions | 0 | - | 4.08 | 13,899 |
| History of Paris | 0 | - | 4.24 | 13,649 |
| Word Chain - Germany | 0 | - | 4.31 | 22,588 |
| The Trojan War | 0 | - | 4.83 | 39,733 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,870 |
| Word Chain - Italy | 0 | - | 4.07 | 23,165 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,105 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,538 |
| Roman Emperors | 0 | - | 4.95 | 120,070 |
| Famous Nordic People | 0 | - | 4.34 | 20,123 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,614 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,868 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,344 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,533 |
| People on Money - England | 0 | - | 4.29 | 16,613 |
| Name a Valid English City | 0 | - | 4.19 | 16,730 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,182 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,329 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 119,346 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,055 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,697 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,576 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,724 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,592 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,894 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,737 |
| European Geography By Letter - V | 0 | - | 4.43 | 93,042 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,478 |
| Europe Map Quiz | 0 | - | 5.00 | 4,763,547 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,279 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,946 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,229 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,239 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,643 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,446 |
| Capitals of French Regions | 0 | - | 4.45 | 16,078 |
| Capitals of German States | 0 | - | 4.74 | 28,956 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,341 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,916 |
| Ancient Greek Words | 0 | - | 4.93 | 111,627 |
| Name Every Beatles Song | 0 | - | 4.97 | 236,313 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,738 |
| Africa Map Quiz | 0 | - | 5.00 | 2,118,155 |
| Oceania Map Quiz | 0 | - | 4.98 | 642,470 |
| Australian Capitals | 0 | - | 4.92 | 62,724 |
| European Physical Geography | 0 | - | 4.26 | 33,510 |
| Geography of Russia | 0 | - | 4.57 | 21,530 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,964 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,193 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,146 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,043 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,669 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,353 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,493 |
| Geography of the British Empire | 0 | - | 4.48 | 39,676 |
| Champions League Top 4 | 0 | - | 4.77 | 136,514 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,448,318 |
| Asia Map Quiz | 0 | - | 4.99 | 916,990 |
| Countries of Africa | 0 | - | 5.00 | 2,537,548 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,842 |
| African East Coast | 0 | - | 4.96 | 96,079 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,895 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,720 |
| Australia Map Quiz | 0 | - | 4.95 | 344,647 |
| United States Map Quiz | 0 | - | 4.98 | 4,158,745 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,296 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,657 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,066 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,512 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,818 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,977 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,107 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,773 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,582 |
| European Geography By Letter - K | 0 | - | 4.14 | 70,222 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,776 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,956 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,677 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,225 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,282 |
| European Geography A-Z | 0 | - | 4.29 | 49,275 |
| Country Codes of Europe | 0 | - | 3.43 | 13,730 |
| The Only European Country ... | 0 | - | 4.91 | 216,685 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,165 |
| Four Letter European Geography #1 | 0 | - | 4.40 | 28,163 |
| Austria... or Australia? | 0 | - | 4.68 | 104,359 |
| Presidents of France | 0 | - | 4.25 | 24,144 |
| French Foods | 0 | - | 4.00 | 27,698 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,001 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,914 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,999 |
| Italian Inventions | 0 | - | 3.81 | 18,442 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,335 |
| Kings of Spain Quiz | 0 | - | 4.14 | 14,048 |
