| European Countries by First 2 Letters | 0 | - | 4.95 | 529,746 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,378 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,051 |
| States of Germany | 0 | - | 4.95 | 152,747 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,100 |
| Regions of Italy | 0 | - | 4.92 | 75,982 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,238 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,057 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,250 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,711 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,180 |
| Official European Union Languages | 0 | - | 4.97 | 238,601 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,920 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,361 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,448,552 |
| Asia Map Quiz | 0 | - | 4.99 | 917,338 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,011 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,854 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,039 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,383,606 |
| History of Italy | 0 | - | 4.55 | 31,987 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,819 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,672 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,247 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,391 |
| Celtic Nations | 0 | - | 4.69 | 46,959 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,406 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,713 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,089 |
| Counties of England | 0 | - | 4.97 | 797,394 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 356,368 |
| Flags of Asia Quiz | 0 | - | 4.99 | 614,000 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 110,277 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 153,803 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,196 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 108,032 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 126,966 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,552 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,480 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,464 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.91 | 49,983 |
| Countries of the Middle East | 0 | - | 4.96 | 201,268 |
| Regions of France | 0 | - | 4.72 | 120,906 |
| France Immigration by Country | 0 | - | 4.70 | 76,557 |
| Famous Germans | 0 | - | 4.50 | 55,324 |
| German Groups of Things | 0 | - | 4.46 | 38,485 |
| Germany True or False? | 0 | - | 4.61 | 48,828 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,050 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,536 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,401 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,281 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,288 |
| States of India | 0 | - | 4.95 | 193,547 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,182 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,511 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,688 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,462 |
| History of Austria | 0 | - | 4.70 | 17,867 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,513 |
| Geography of the French Empire | 0 | - | 4.45 | 27,081 |
| The French Revolution | 0 | - | 4.47 | 23,968 |
| France Multiple Choice | 0 | - | 4.39 | 40,748 |
| History of France | 0 | - | 4.59 | 57,048 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,898 |
| The Vikings! | 0 | - | 4.46 | 28,351 |
| The Portuguese Empire | 0 | - | 4.58 | 12,067 |
| American to British Word Translation | 0 | - | 4.14 | 139,126 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,910 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,034 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,754 |
| Champions League Winners | 0 | - | 4.92 | 1,007,384 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,536 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 106,056 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,348 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,257 |
| Monarchies of Asia | 0 | - | 4.97 | 71,115 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,915 |
| Provinces of Turkey | 0 | - | 4.95 | 204,326 |
| Provinces of China | 0 | - | 4.97 | 204,761 |
| Japanese Prefectures | 0 | - | 4.98 | 137,116 |
| Countries Kim Jong Un Has Been To | 0 | - | 4.95 | 32,879 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,910 |
| Countries with the Most Ascents of Mount Everest | 0 | - | 4.95 | 58,263 |
| Nepal Country Quiz | 0 | - | 4.95 | 37,750 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,421 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,983 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,225 |
| Departments of France | 0 | - | 4.93 | 54,200 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,560 |
| England or Wales? | 0 | - | 4.94 | 45,720 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,486 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,004 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,293 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,061 |
| Countries Closest to the Persian Gulf | 0 | - | 4.93 | 83,409 |
| Syria Country Quiz | 0 | - | 4.81 | 32,793 |
| Jordan Country Quiz | 0 | - | 4.86 | 31,791 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 80,108 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 101,534 |
| China Cities Map Quiz | 0 | - | 4.93 | 105,262 |
| Provinces of China Map Quiz | 0 | - | 4.92 | 93,746 |
| Japan Country Quiz | 0 | - | 4.93 | 142,539 |
| States of India Map Quiz | 0 | - | 4.83 | 26,540 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,610 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,660 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,738 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,086 |
| Slavic Languages | 0 | - | 4.68 | 54,386 |
| Famous French People | 0 | - | 4.07 | 35,633 |
| Word Chain - France | 0 | - | 4.38 | 42,788 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,629 |
| Italian Foods | 0 | - | 4.30 | 72,812 |
| History of The Netherlands | 0 | - | 4.46 | 17,442 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,485 |
| Canary Islands | 0 | - | 4.62 | 17,483 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,737 |
| British Spellings | 0 | - | 4.06 | 99,464 |
| British Groups of Things | 0 | - | 4.25 | 82,880 |
| British Acronyms | 0 | - | 4.40 | 45,807 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,039 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,841 |
| Countries and States in the Caucasus | 0 | - | 4.46 | 51,562 |
| The Only Remaining Asian Country . . . | 0 | - | 4.64 | 45,854 |
| Middle Eastern Geography Quiz | 0 | - | 4.57 | 43,863 |
| Countries Closest to Yemen | 0 | - | 4.92 | 22,572 |
| Countries Closest to Taiwan | 0 | - | 4.81 | 93,364 |
| Bhutan Country Quiz | 0 | - | 4.87 | 24,231 |
| Countries Bordering India | 0 | - | 4.98 | 163,449 |
| Countries Closest to India | 0 | - | 4.97 | 102,813 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,485 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,785 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,488 |
| Geography of Germany | 0 | - | 4.35 | 17,191 |
| History of Germany | 0 | - | 4.39 | 52,837 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 647,791 |
| Name that Greek Letter | 0 | - | 4.93 | 323,684 |
| Byzantine History | 0 | - | 4.91 | 28,876 |
| Byzantine Emperors | 0 | - | 4.92 | 14,215 |
| History of Spain | 0 | - | 4.23 | 21,095 |
| Languages of Spain | 0 | - | 4.36 | 23,326 |
| British to American Word Translation | 0 | - | 3.74 | 255,104 |
| British Foods by Description | 0 | - | 3.94 | 48,332 |
| British and American Word Differences | 0 | - | 2.63 | 46,885 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,601 |
| Bridges of London | 0 | - | 4.17 | 10,109 |
| British Sport Trivia | 0 | - | 4.37 | 20,465 |
| Famous Welsh People | 0 | - | 4.31 | 11,513 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,479 |
| Asian Countries by Borders in 30 Seconds | 0 | - | 4.45 | 415,269 |
| Qatar Country Quiz | 0 | - | 4.86 | 31,534 |
| Countries Bordering Iran | 0 | - | 4.83 | 95,310 |
| Countries that Border Iraq | 0 | - | 4.97 | 108,388 |
| Countries Closest to Turkey | 0 | - | 4.96 | 126,115 |
| Countries Bordering Turkey | 0 | - | 4.98 | 117,188 |
| Countries Bordering Saudi Arabia | 0 | - | 4.95 | 118,665 |
| Oman Country Quiz | 0 | - | 4.86 | 26,927 |
| Countries Closest to Cyprus | 0 | - | 4.91 | 55,606 |
| Countries Closest to Indonesia | 0 | - | 4.97 | 104,592 |
| Countries Closest to Vietnam | 0 | - | 4.95 | 94,015 |
| Countries Bordering Myanmar | 0 | - | 4.87 | 77,568 |
| Brunei Country Quiz | 0 | - | 4.87 | 21,942 |
| Countries that Border China | 0 | - | 4.96 | 263,252 |
| Countries that Visit Japan the Most | 0 | - | 4.93 | 77,475 |
| Most-Visited Countries by Japanese | 0 | - | 4.95 | 60,174 |
| Countries Closest to Japan | 0 | - | 4.92 | 138,682 |
| Closest Countries to North Korea | 0 | - | 4.94 | 122,446 |
| Hindu Countries | 0 | - | 4.86 | 50,189 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,305 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,142 |
| History of Russia Quiz | 0 | - | 4.47 | 31,924 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,743 |
| Movies Set in France | 0 | - | 4.26 | 13,123 |
| French Inventions | 0 | - | 4.08 | 13,899 |
| History of Paris | 0 | - | 4.24 | 13,654 |
| Word Chain - Germany | 0 | - | 4.31 | 22,591 |
| The Trojan War | 0 | - | 4.83 | 39,748 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,935 |
| Word Chain - Italy | 0 | - | 4.07 | 23,169 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,560 |
| Roman Emperors | 0 | - | 4.95 | 120,130 |
| Famous Nordic People | 0 | - | 4.34 | 20,135 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,615 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,885 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,345 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,535 |
| People on Money - England | 0 | - | 4.29 | 16,617 |
| Asian Physical Geography | 0 | - | 4.61 | 35,536 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,271 |
| East Asian Islands on the Map | 0 | - | 4.54 | 33,103 |
| 10 Westernmost Countries in Asia | 0 | - | 4.69 | 71,219 |
| Asian Island Nations | 0 | - | 4.63 | 94,201 |
| Asia's Busiest Airports | 0 | - | 4.69 | 52,800 |
| Turkmenistan Country Quiz | 0 | - | 4.81 | 25,988 |
| Arab Spring Countries | 0 | - | 4.51 | 44,049 |
| Egypt Country Quiz | 0 | - | 4.83 | 77,558 |
| Countries that Beat China | 0 | - | 4.85 | 115,902 |
| India Cities Map Quiz | 0 | - | 4.67 | 61,127 |
| Countries of the Indian Diaspora | 0 | - | 4.45 | 59,321 |
| Countries with the Most Hindus | 0 | - | 4.90 | 123,073 |
| Australian Capitals | 0 | - | 4.92 | 62,730 |
