| European Countries by First 2 Letters | 0 | - | 4.95 | 528,955 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,298 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,900 |
| States of Germany | 0 | - | 4.96 | 152,030 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,916 |
| Regions of Italy | 0 | - | 4.92 | 75,635 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,965 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,703 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,072 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,665 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,025 |
| Official European Union Languages | 0 | - | 4.97 | 238,208 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,655 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,636 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,447,020 |
| Asia Map Quiz | 0 | - | 4.99 | 914,955 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,903 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,770 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 98,710 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,381,582 |
| History of Italy | 0 | - | 4.55 | 31,941 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,668 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,625 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,178 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,368 |
| Celtic Nations | 0 | - | 4.69 | 46,912 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,278 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,045 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 170,849 |
| Counties of England | 0 | - | 4.97 | 795,151 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 354,735 |
| Flags of Asia Quiz | 0 | - | 4.99 | 611,761 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 110,114 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 153,573 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,001 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,846 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 126,699 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,323 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,302 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,067 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.91 | 49,781 |
| Countries of the Middle East | 0 | - | 4.96 | 200,823 |
| Regions of France | 0 | - | 4.75 | 120,483 |
| France Immigration by Country | 0 | - | 4.70 | 76,422 |
| Famous Germans | 0 | - | 4.50 | 55,206 |
| German Groups of Things | 0 | - | 4.46 | 38,450 |
| Germany True or False? | 0 | - | 4.61 | 48,747 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,897 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,347 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,249 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,238 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,098 |
| States of India | 0 | - | 4.95 | 192,746 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,954 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,415 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,050 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,754 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,530 |
| History of Austria | 0 | - | 4.70 | 17,839 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,215 |
| Geography of the French Empire | 0 | - | 4.45 | 27,032 |
| The French Revolution | 0 | - | 4.46 | 23,912 |
| France Multiple Choice | 0 | - | 4.39 | 40,716 |
| History of France | 0 | - | 4.59 | 56,863 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,586 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,464 |
| The Vikings! | 0 | - | 4.46 | 28,322 |
| The Portuguese Empire | 0 | - | 4.58 | 12,053 |
| American to British Word Translation | 0 | - | 4.14 | 138,810 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,868 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,886 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,080 |
| Champions League Winners | 0 | - | 4.92 | 1,004,395 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,424 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 105,811 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,097 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,033 |
| Monarchies of Asia | 0 | - | 4.97 | 70,999 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,791 |
| Provinces of Turkey | 0 | - | 4.95 | 203,744 |
| Provinces of China | 0 | - | 4.97 | 203,664 |
| Japanese Prefectures | 0 | - | 4.98 | 136,523 |
| Countries Kim Jong Un Has Been To | 0 | - | 4.95 | 32,733 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,650 |
| Countries with the Most Ascents of Mount Everest | 0 | - | 4.95 | 58,142 |
| Nepal Country Quiz | 0 | - | 4.95 | 37,669 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,731 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,410 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,768 |
| Departments of France | 0 | - | 4.93 | 53,863 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,526 |
| England or Wales? | 0 | - | 4.94 | 45,619 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,946 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,882 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,068 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,817 |
| Countries Closest to the Persian Gulf | 0 | - | 4.93 | 83,301 |
| Syria Country Quiz | 0 | - | 4.81 | 32,689 |
| Jordan Country Quiz | 0 | - | 4.86 | 31,693 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 79,960 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 101,346 |
| China Cities Map Quiz | 0 | - | 4.93 | 104,985 |
| Provinces of China Map Quiz | 0 | - | 4.92 | 93,452 |
| Japan Country Quiz | 0 | - | 4.93 | 142,267 |
| States of India Map Quiz | 0 | - | 4.83 | 26,426 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,569 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,645 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,539 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,576 |
| Slavic Languages | 0 | - | 4.68 | 54,286 |
| Famous French People | 0 | - | 4.06 | 35,157 |
| Word Chain - France | 0 | - | 4.38 | 42,751 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,585 |
| Italian Foods | 0 | - | 4.30 | 72,674 |
| History of The Netherlands | 0 | - | 4.46 | 17,413 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,427 |
| Canary Islands | 0 | - | 4.62 | 17,463 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,624 |
| British Spellings | 0 | - | 4.06 | 99,413 |
| British Groups of Things | 0 | - | 4.25 | 82,841 |
| British Acronyms | 0 | - | 4.40 | 45,769 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,023 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,702 |
| Countries and States in the Caucasus | 0 | - | 4.46 | 51,462 |
| The Only Remaining Asian Country . . . | 0 | - | 4.64 | 45,744 |
| Middle Eastern Geography Quiz | 0 | - | 4.57 | 43,734 |
| Countries Closest to Yemen | 0 | - | 4.91 | 22,505 |
| Countries Closest to Taiwan | 0 | - | 4.81 | 93,204 |
| Bhutan Country Quiz | 0 | - | 4.87 | 24,189 |
| Countries Bordering India | 0 | - | 4.98 | 163,350 |
| Countries Closest to India | 0 | - | 4.97 | 102,666 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,363 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,729 |
| Geography of Germany | 0 | - | 4.35 | 17,169 |
| History of Germany | 0 | - | 4.39 | 52,787 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,355 |
| Name that Greek Letter | 0 | - | 4.93 | 323,163 |
| Byzantine History | 0 | - | 4.91 | 28,761 |
| History of Spain | 0 | - | 4.23 | 21,071 |
| Languages of Spain | 0 | - | 4.36 | 23,294 |
| British to American Word Translation | 0 | - | 3.74 | 255,012 |
| British Foods by Description | 0 | - | 3.94 | 48,316 |
| British and American Word Differences | 0 | - | 2.63 | 46,858 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,582 |
| Bridges of London | 0 | - | 4.17 | 10,095 |
| British Sport Trivia | 0 | - | 4.37 | 20,443 |
| Famous Welsh People | 0 | - | 4.29 | 11,395 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,397 |
| Asian Countries by Borders in 30 Seconds | 0 | - | 4.45 | 414,705 |
| Qatar Country Quiz | 0 | - | 4.86 | 31,475 |
| Countries Bordering Iran | 0 | - | 4.83 | 95,170 |
| Countries that Border Iraq | 0 | - | 4.97 | 108,260 |
| Countries Closest to Turkey | 0 | - | 4.96 | 125,910 |
| Countries Bordering Turkey | 0 | - | 4.98 | 117,018 |
| Countries Bordering Saudi Arabia | 0 | - | 4.95 | 118,544 |
| Oman Country Quiz | 0 | - | 4.86 | 26,866 |
| Countries Closest to Cyprus | 0 | - | 4.91 | 55,441 |
| Countries Closest to Indonesia | 0 | - | 4.97 | 104,442 |
| Countries Closest to Vietnam | 0 | - | 4.95 | 93,872 |
| Countries Bordering Myanmar | 0 | - | 4.87 | 77,439 |
| Brunei Country Quiz | 0 | - | 4.87 | 21,900 |
| Countries that Border China | 0 | - | 4.96 | 262,905 |
| Countries that Visit Japan the Most | 0 | - | 4.93 | 77,345 |
| Most-Visited Countries by Japanese | 0 | - | 4.95 | 60,059 |
| Countries Closest to Japan | 0 | - | 4.92 | 138,492 |
| Closest Countries to North Korea | 0 | - | 4.94 | 122,288 |
| Hindu Countries | 0 | - | 4.86 | 50,030 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,944 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,907 |
| History of Russia Quiz | 0 | - | 4.49 | 31,886 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,703 |
| Movies Set in France | 0 | - | 4.26 | 13,115 |
| French Inventions | 0 | - | 4.08 | 13,891 |
| History of Paris | 0 | - | 4.24 | 13,641 |
| Word Chain - Germany | 0 | - | 4.31 | 22,567 |
| The Trojan War | 0 | - | 4.83 | 39,663 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,594 |
| Word Chain - Italy | 0 | - | 4.07 | 23,151 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,437 |
| Roman Emperors | 0 | - | 4.95 | 119,716 |
| Famous Nordic People | 0 | - | 4.34 | 20,074 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,613 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,806 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,331 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,518 |
| People on Money - England | 0 | - | 4.29 | 16,606 |
| Asian Physical Geography | 0 | - | 4.60 | 35,488 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,761 |
| East Asian Islands on the Map | 0 | - | 4.54 | 33,059 |
| 10 Westernmost Countries in Asia | 0 | - | 4.69 | 71,112 |
| Asian Island Nations | 0 | - | 4.63 | 94,105 |
| Asia's Busiest Airports | 0 | - | 4.77 | 52,688 |
| Turkmenistan Country Quiz | 0 | - | 4.81 | 25,933 |
| Arab Spring Countries | 0 | - | 4.51 | 43,983 |
| Egypt Country Quiz | 0 | - | 4.83 | 77,436 |
| Countries that Beat China | 0 | - | 4.86 | 115,537 |
| India Cities Map Quiz | 0 | - | 4.64 | 61,028 |
| Countries of the Indian Diaspora | 0 | - | 4.48 | 58,928 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,881 |
| Australian Capitals | 0 | - | 4.92 | 62,701 |
