| European Countries by First 2 Letters | 0 | - | 4.95 | 532,834 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,726 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,499 |
| States of Germany | 0 | - | 4.95 | 154,793 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,763 |
| Regions of Italy | 0 | - | 4.92 | 77,200 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,865 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,486 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,850 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,850 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,814 |
| Official European Union Languages | 0 | - | 4.97 | 239,964 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,759 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,211 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,106 |
| Asia Map Quiz | 0 | - | 4.99 | 926,171 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,360 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,085 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 100,075 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,387,773 |
| History of Italy | 0 | - | 4.55 | 32,169 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,458 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,839 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,456 |
| Celtic Nations | 0 | - | 4.61 | 47,115 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,095 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,014 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,268 |
| Counties of England | 0 | - | 4.97 | 803,772 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,291 |
| Flags of Asia Quiz | 0 | - | 4.99 | 621,400 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 110,883 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,658 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 100,030 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 109,265 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,950 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 108,422 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 72,172 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,794 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.92 | 50,728 |
| Countries of the Middle East | 0 | - | 4.96 | 203,150 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 23,524 |
| Regions of France | 0 | - | 4.70 | 122,272 |
| France Immigration by Country | 0 | - | 4.70 | 76,980 |
| Famous Germans | 0 | - | 4.50 | 55,843 |
| German Groups of Things | 0 | - | 4.47 | 38,654 |
| Germany True or False? | 0 | - | 4.61 | 49,049 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,545 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,489 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,877 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,425 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,904 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,065 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,849 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,786 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 89,026 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,096 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,804 |
| History of Austria | 0 | - | 4.70 | 17,987 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,758 |
| Geography of the French Empire | 0 | - | 4.45 | 27,225 |
| The French Revolution | 0 | - | 4.47 | 24,158 |
| France Multiple Choice | 0 | - | 4.39 | 40,867 |
| History of France | 0 | - | 4.61 | 57,688 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,924 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,569 |
| The Vikings! | 0 | - | 4.46 | 28,419 |
| The Portuguese Empire | 0 | - | 4.58 | 12,116 |
| American to British Word Translation | 0 | - | 4.14 | 139,778 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,082 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,585 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,195 |
| Champions League Winners | 0 | - | 4.92 | 1,017,270 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 67,087 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.90 | 106,994 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 136,216 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,846 |
| Monarchies of Asia | 0 | - | 4.97 | 71,569 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,326 |
| Provinces of Turkey | 0 | - | 4.95 | 206,140 |
| Provinces of China | 0 | - | 4.97 | 208,452 |
| Japanese Prefectures | 0 | - | 4.98 | 139,264 |
| States of India | 0 | - | 4.94 | 196,295 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,156 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,196 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,123 |
| Departments of France | 0 | - | 4.93 | 55,313 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,762 |
| England or Wales? | 0 | - | 4.94 | 45,999 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,349 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,794 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 98,081 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 111,477 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,891 |
| Countries Closest to the Persian Gulf | 0 | - | 4.93 | 83,760 |
| Qatar Country Quiz | 0 | - | 4.86 | 31,742 |
| Syria Country Quiz | 0 | - | 4.81 | 33,081 |
| Jordan Country Quiz | 0 | - | 4.86 | 32,121 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 80,894 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 102,109 |
| China Cities Map Quiz | 0 | - | 4.94 | 105,978 |
| Provinces of China Map Quiz | 0 | - | 4.92 | 94,736 |
| Japan Country Quiz | 0 | - | 4.93 | 143,465 |
| Countries Kim Jong Un Has Been To | 0 | - | 4.95 | 33,404 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,641 |
| Countries with the Most Ascents of Mount Everest | 0 | - | 4.95 | 58,623 |
| Nepal Country Quiz | 0 | - | 4.95 | 38,005 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,761 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,732 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,405 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 123,375 |
| Slavic Languages | 0 | - | 4.67 | 54,747 |
| Famous French People | 0 | - | 4.05 | 36,135 |
| Word Chain - France | 0 | - | 4.38 | 42,950 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,752 |
| Italian Foods | 0 | - | 4.30 | 73,336 |
| History of The Netherlands | 0 | - | 4.46 | 17,565 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,657 |
| Canary Islands | 0 | - | 4.62 | 17,545 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,120 |
| British Spellings | 0 | - | 4.06 | 99,621 |
| British Groups of Things | 0 | - | 4.26 | 83,034 |
| British Acronyms | 0 | - | 4.40 | 45,954 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,123 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,183 |
| Countries and States in the Caucasus | 0 | - | 4.46 | 51,853 |
| The Only Remaining Asian Country . . . | 0 | - | 4.64 | 46,160 |
| Middle Eastern Geography Quiz | 0 | - | 4.57 | 44,236 |
| Countries Closest to Yemen | 0 | - | 4.92 | 22,810 |
| States of India Map Quiz | 0 | - | 4.85 | 26,930 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,014 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,119 |
| Geography of Germany | 0 | - | 4.35 | 17,299 |
| History of Germany | 0 | - | 4.39 | 52,991 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 652,573 |
| Name that Greek Letter | 0 | - | 4.93 | 325,161 |
| Byzantine History | 0 | - | 4.91 | 29,035 |
| Byzantine Emperors | 0 | - | 4.93 | 14,640 |
| History of Spain | 0 | - | 4.23 | 21,171 |
| Languages of Spain | 0 | - | 4.36 | 23,458 |
| British to American Word Translation | 0 | - | 3.74 | 255,382 |
| British Foods by Description | 0 | - | 3.94 | 48,399 |
| British and American Word Differences | 0 | - | 2.63 | 46,936 |
| British Geography Quiz #2 | 0 | - | 4.30 | 28,245 |
| Bridges of London | 0 | - | 4.17 | 10,149 |
| British Sport Trivia | 0 | - | 4.39 | 20,540 |
| Famous Welsh People | 0 | - | 4.34 | 11,712 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,734 |
| Asian Countries by Borders in 30 Seconds | 0 | - | 4.45 | 418,092 |
| Countries Bordering Iran | 0 | - | 4.83 | 96,113 |
| Countries that Border Iraq | 0 | - | 4.97 | 109,162 |
| Countries Closest to Turkey | 0 | - | 4.96 | 126,985 |
| Countries Bordering Turkey | 0 | - | 4.98 | 117,935 |
| Countries Bordering Saudi Arabia | 0 | - | 4.96 | 133,881 |
| Oman Country Quiz | 0 | - | 4.86 | 27,103 |
| Countries Closest to Cyprus | 0 | - | 4.91 | 56,220 |
| Countries Closest to Indonesia | 0 | - | 4.97 | 105,120 |
| Countries Closest to Vietnam | 0 | - | 4.96 | 94,437 |
| Countries Bordering Myanmar | 0 | - | 4.87 | 78,231 |
| Brunei Country Quiz | 0 | - | 4.87 | 22,093 |
| Countries that Border China | 0 | - | 4.96 | 264,432 |
| Countries that Visit Japan the Most | 0 | - | 4.93 | 77,915 |
| Most-Visited Countries by Japanese | 0 | - | 4.95 | 60,588 |
| Countries Closest to Japan | 0 | - | 4.92 | 139,266 |
| Countries Closest to Taiwan | 0 | - | 4.81 | 93,796 |
| Bhutan Country Quiz | 0 | - | 4.87 | 24,362 |
| Countries Bordering India | 0 | - | 4.98 | 163,862 |
| Countries Closest to India | 0 | - | 4.97 | 103,294 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,953 |
| History of Russia Quiz | 0 | - | 4.47 | 32,012 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,891 |
| Movies Set in France | 0 | - | 4.26 | 13,157 |
| French Inventions | 0 | - | 4.10 | 13,930 |
| History of Paris | 0 | - | 4.24 | 13,684 |
| Word Chain - Germany | 0 | - | 4.31 | 22,693 |
| The Trojan War | 0 | - | 4.83 | 40,031 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,098 |
| Word Chain - Italy | 0 | - | 4.07 | 23,227 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,651 |
| Roman Emperors | 0 | - | 4.95 | 121,353 |
| Famous Nordic People | 0 | - | 4.34 | 20,324 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,648 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,124 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,420 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,583 |
| People on Money - England | 0 | - | 4.29 | 16,647 |
| Asian Physical Geography | 0 | - | 4.61 | 35,635 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 280,895 |
| East Asian Islands on the Map | 0 | - | 4.55 | 33,225 |
| 10 Westernmost Countries in Asia | 0 | - | 4.69 | 71,660 |
| Asian Island Nations | 0 | - | 4.63 | 94,505 |
| Asia's Busiest Airports | 0 | - | 4.70 | 53,180 |
| Turkmenistan Country Quiz | 0 | - | 4.81 | 26,164 |
| Arab Spring Countries | 0 | - | 4.51 | 44,271 |
| Egypt Country Quiz | 0 | - | 4.82 | 77,982 |
| Countries that Beat China | 0 | - | 4.85 | 116,857 |
| Closest Countries to North Korea | 0 | - | 4.94 | 123,328 |
| Hindu Countries | 0 | - | 4.86 | 50,635 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,580 |
| Australian Capitals | 0 | - | 4.92 | 62,853 |
