| European Countries by First 2 Letters | 0 | - | 4.95 | 526,100 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,020 |
| States of Germany | 0 | - | 4.96 | 149,852 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,933 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,491 |
| Regions of Italy | 0 | - | 4.92 | 74,617 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,753 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,174 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,068 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,395 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,539 |
| Official European Union Languages | 0 | - | 4.97 | 236,392 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,618 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,928 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,438,451 |
| Asia Map Quiz | 0 | - | 4.99 | 906,134 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,492 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,535 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,351 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,375,164 |
| History of Italy | 0 | - | 4.55 | 31,801 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,106 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,467 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,965 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,227 |
| Celtic Nations | 0 | - | 4.69 | 46,800 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,796 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,605 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,602 |
| Counties of England | 0 | - | 4.97 | 788,536 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,313 |
| Flags of Asia Quiz | 0 | - | 4.99 | 604,742 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 109,289 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,689 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,336 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,150 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,609 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,394 |
| Top Asian Languages on a Map | 0 | - | 4.94 | 70,611 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 228,656 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.93 | 49,039 |
| Countries of the Middle East | 0 | - | 4.96 | 198,755 |
| Regions of France | 0 | - | 4.78 | 119,086 |
| France Immigration by Country | 0 | - | 4.72 | 75,925 |
| Famous Germans | 0 | - | 4.50 | 54,570 |
| German Groups of Things | 0 | - | 4.46 | 38,294 |
| Germany True or False? | 0 | - | 4.61 | 48,511 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,411 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,269 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,740 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,030 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,883 |
| States of India | 0 | - | 4.94 | 189,783 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,277 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,133 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,105 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,141 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,670 |
| History of Austria | 0 | - | 4.70 | 17,739 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,027 |
| Geography of the French Empire | 0 | - | 4.48 | 26,917 |
| The French Revolution | 0 | - | 4.46 | 23,756 |
| France Multiple Choice | 0 | - | 4.38 | 40,621 |
| History of France | 0 | - | 4.59 | 55,917 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,586 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,374 |
| The Vikings! | 0 | - | 4.45 | 28,236 |
| The Portuguese Empire | 0 | - | 4.54 | 11,983 |
| American to British Word Translation | 0 | - | 4.06 | 117,018 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,689 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,859 |
| Counties of England Map Quiz | 0 | - | 4.97 | 305,984 |
| Champions League Winners | 0 | - | 4.92 | 995,338 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 65,938 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 104,944 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,263 |
| Pixelated Asia Map | 0 | - | 4.90 | 72,323 |
| Monarchies of Asia | 0 | - | 4.97 | 70,547 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,394 |
| Provinces of Turkey | 0 | - | 4.95 | 200,409 |
| Provinces of China | 0 | - | 4.97 | 199,782 |
| Japanese Prefectures | 0 | - | 4.98 | 134,358 |
| Countries Kim Jong Un Has Been To | 0 | - | 4.95 | 32,139 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,739 |
| Countries with the Most Ascents of Mount Everest | 0 | - | 4.95 | 57,724 |
| Nepal Country Quiz | 0 | - | 4.95 | 37,292 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,291 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,017 |
| Departments of France | 0 | - | 4.93 | 52,699 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,346 |
| England or Wales? | 0 | - | 4.94 | 45,287 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,326 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,459 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,093 |
| Name a Valid Asian Country | 0 | - | 4.98 | 119,963 |
| Countries Closest to the Persian Gulf | 0 | - | 4.93 | 82,951 |
| Syria Country Quiz | 0 | - | 4.81 | 32,272 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 79,392 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 100,746 |
| China Cities Map Quiz | 0 | - | 4.93 | 103,941 |
| Provinces of China Map Quiz | 0 | - | 4.92 | 92,709 |
| Japan Country Quiz | 0 | - | 4.92 | 141,134 |
| States of India Map Quiz | 0 | - | 4.82 | 25,987 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,428 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,596 |
| Word Scramble - European Countries | 0 | - | 4.74 | 140,928 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 112,850 |
| Slavic Languages | 0 | - | 4.67 | 53,938 |
| Word Chain - France | 0 | - | 4.38 | 42,570 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,419 |
| Italian Foods | 0 | - | 4.30 | 72,131 |
| History of The Netherlands | 0 | - | 4.46 | 17,299 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,230 |
| Canary Islands | 0 | - | 4.61 | 17,390 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,100 |
| British Spellings | 0 | - | 4.07 | 99,192 |
| British Groups of Things | 0 | - | 4.25 | 82,659 |
| British Acronyms | 0 | - | 4.39 | 45,604 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,942 |
| Countries and States in the Caucasus | 0 | - | 4.46 | 51,120 |
| The Only Remaining Asian Country . . . | 0 | - | 4.69 | 45,428 |
| Middle Eastern Geography Quiz | 0 | - | 4.57 | 43,209 |
| Countries Closest to Yemen | 0 | - | 4.91 | 22,286 |
| Countries Closest to Taiwan | 0 | - | 4.81 | 92,735 |
| Kazakhstan Country Quiz | 0 | - | 4.83 | 30,512 |
| Bhutan Country Quiz | 0 | - | 4.87 | 23,995 |
| Countries Bordering India | 0 | - | 4.98 | 162,553 |
| Countries Closest to India | 0 | - | 4.96 | 102,161 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,758 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,495 |
| Geography of Germany | 0 | - | 4.35 | 17,079 |
| History of Germany | 0 | - | 4.39 | 52,595 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,365 |
| Name that Greek Letter | 0 | - | 4.94 | 321,474 |
| Byzantine History | 0 | - | 4.91 | 28,591 |
| History of Spain | 0 | - | 4.29 | 20,992 |
| Languages of Spain | 0 | - | 4.36 | 23,137 |
| British to American Word Translation | 0 | - | 3.74 | 253,278 |
| British Foods by Description | 0 | - | 3.94 | 48,226 |
| British and American Word Differences | 0 | - | 2.67 | 45,905 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,495 |
| Bridges of London | 0 | - | 4.17 | 10,061 |
| British Sport Trivia | 0 | - | 4.37 | 20,351 |
| Famous Welsh People | 0 | - | 4.21 | 9,768 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,115 |
| Asian Countries by Borders in 30 Seconds | 0 | - | 4.45 | 412,536 |
| Qatar Country Quiz | 0 | - | 4.85 | 31,268 |
| Countries Bordering Iran | 0 | - | 4.83 | 94,735 |
| Countries that Border Iraq | 0 | - | 4.97 | 107,791 |
| Countries Closest to Turkey | 0 | - | 4.96 | 125,245 |
| Countries Bordering Turkey | 0 | - | 4.98 | 116,383 |
| Countries Bordering Saudi Arabia | 0 | - | 4.95 | 118,170 |
| Oman Country Quiz | 0 | - | 4.86 | 26,656 |
| Countries Closest to Cyprus | 0 | - | 4.90 | 54,831 |
| Jordan Country Quiz | 0 | - | 4.86 | 31,389 |
| Countries Closest to Indonesia | 0 | - | 4.96 | 103,889 |
| Countries Closest to Vietnam | 0 | - | 4.95 | 93,461 |
| Countries Bordering Myanmar | 0 | - | 4.87 | 77,026 |
| Brunei Country Quiz | 0 | - | 4.87 | 21,744 |
| Countries that Border China | 0 | - | 4.96 | 261,726 |
| Countries that Visit Japan the Most | 0 | - | 4.93 | 76,893 |
| Most-Visited Countries by Japanese | 0 | - | 4.95 | 59,666 |
| Countries Closest to Japan | 0 | - | 4.92 | 137,850 |
| Closest Countries to North Korea | 0 | - | 4.94 | 121,738 |
| Hindu Countries | 0 | - | 4.85 | 49,459 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,376 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,031 |
| History of Russia Quiz | 0 | - | 4.49 | 31,774 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,550 |
| Famous French People | 0 | - | 4.12 | 27,891 |
| Movies Set in France | 0 | - | 4.26 | 13,067 |
| French Inventions | 0 | - | 4.08 | 13,859 |
| History of Paris | 0 | - | 4.24 | 13,612 |
| Word Chain - Germany | 0 | - | 4.31 | 22,471 |
| The Trojan War | 0 | - | 4.83 | 39,400 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,395 |
| Word Chain - Italy | 0 | - | 4.07 | 23,080 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 83,989 |
| Roman Emperors | 0 | - | 4.95 | 118,340 |
| Famous Nordic People | 0 | - | 4.34 | 19,826 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,540 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,361 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,233 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,454 |
| People on Money - England | 0 | - | 4.29 | 16,559 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,293 |
| Asian Physical Geography | 0 | - | 4.61 | 35,362 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 276,982 |
| East Asian Islands on the Map | 0 | - | 4.54 | 32,902 |
| 10 Westernmost Countries in Asia | 0 | - | 4.69 | 70,806 |
| Asian Island Nations | 0 | - | 4.63 | 93,709 |
| Asia's Busiest Airports | 0 | - | 4.77 | 52,239 |
| Turkmenistan Country Quiz | 0 | - | 4.81 | 25,653 |
| Arab Spring Countries | 0 | - | 4.51 | 43,794 |
| Egypt Country Quiz | 0 | - | 4.82 | 76,992 |
| Countries that Beat China | 0 | - | 4.86 | 114,632 |
| India Cities Map Quiz | 0 | - | 4.63 | 60,644 |
| Countries of the Indian Diaspora | 0 | - | 4.46 | 53,908 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,233 |
| Australian Capitals | 0 | - | 4.92 | 62,586 |
