| Australian Capitals | 0 | - | 4.92 | 62,776 |
| Countries by National Anthem | 0 | - | 4.93 | 71,317 |
| Australia True or False | 0 | - | 4.87 | 56,997 |
| Non-Stop Flights to New Zealand | 0 | - | 4.46 | 48,141 |
| All First-Level Subdivisions of Oceania on a Map | 0 | - | 4.97 | 27,473 |
| Regions of New Zealand | 0 | - | 4.84 | 28,621 |
| Australia Country Quiz | 0 | - | 4.43 | 69,701 |
| Twelve Days of Christmas | 0 | - | 4.45 | 146,116 |
| Rudolph the Red-Nosed Reindeer | 0 | - | 4.53 | 76,359 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,957 |
| New Zealand Country Quiz | 0 | - | 4.70 | 76,127 |
| Europe Map Quiz | 0 | - | 5.00 | 4,774,545 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,334 |
| Elton John Quiz | 0 | - | 4.49 | 18,498 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,190 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,938 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,760 |
| Christmas Song Lyrics | 0 | - | 4.19 | 70,690 |
| Oceania Map Quiz | 0 | - | 4.98 | 655,868 |
| Word Chain - Australia | 0 | - | 4.38 | 38,185 |
| America the Beautiful Lyrics | 0 | - | 4.27 | 19,774 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,404 |
| Official European Union Languages | 0 | - | 4.97 | 239,090 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,241 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,531 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,450,092 |
| Asia Map Quiz | 0 | - | 4.99 | 920,681 |
| Africa Map Quiz | 0 | - | 5.00 | 2,123,131 |
| First Lines of Christmas Songs | 0 | - | 4.27 | 150,858 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,094 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,041 |
| Australia Map Quiz | 0 | - | 4.95 | 345,409 |
| United States Map Quiz | 0 | - | 4.98 | 4,164,883 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,019 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,773 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,854 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,317 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,152 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,984 |
| The Only European Country ... | 0 | - | 4.91 | 217,735 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,809 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,940 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,903 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,975 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,443 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,385,310 |
| Countries of Africa | 0 | - | 5.00 | 2,547,767 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,237 |
| African East Coast | 0 | - | 4.96 | 96,394 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,244 |
| Christmas Carol Lyrics | 0 | - | 4.20 | 12,517 |
| Flags of Oceania | 0 | - | 5.00 | 260,981 |
| Oceania Physical Geography | 0 | - | 4.30 | 12,709 |
| Australian States and Territories | 0 | - | 4.96 | 142,367 |
| Famous Australians by Description | 0 | - | 4.23 | 28,033 |
| Australia Cities Map Quiz | 0 | - | 4.82 | 146,077 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,388 |
| Australian Slang | 0 | - | 4.24 | 28,668 |
| Flags of North and South America | 0 | - | 4.99 | 374,849 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,760 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,476 |
| The Only American Country ... | 0 | - | 4.92 | 121,893 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,357 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,222 |
| South America Map Quiz | 0 | - | 5.00 | 1,552,478 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,658 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 903,183 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,026,909 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 58,314 |
| North America Map Quiz | 0 | - | 4.98 | 249,817 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 94,919 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 64,491 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,656 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,930 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,837 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,675 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 74,508 |
| Who Did that Motown Song? | 0 | - | 4.48 | 13,063 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,079 |
| US States Quiz | 0 | - | 5.00 | 16,933,442 |
| Canada Provinces and Territories | 0 | - | 5.00 | 344,214 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 642,216 |
| Canadian Musical Acts by Two Songs | 0 | - | 4.03 | 28,755 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,365 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 105,277 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,001 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,445 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,250,421 |
| Celtic Nations | 0 | - | 4.69 | 47,016 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,220 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,331,767 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,058 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,573 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,138 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,698 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,969 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,464 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,869 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,722 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,474 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,702 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,874 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,091 |
| Monarchies of Europe | 0 | - | 4.90 | 98,448 |
| European Countries with One Border | 0 | - | 4.97 | 183,259 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,027 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,796 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,867 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,706 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,498 |
| Slavic Countries | 0 | - | 4.96 | 111,997 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,291 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,195 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,972 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,328 |
| States of Germany | 0 | - | 4.95 | 153,555 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,522 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,363 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,251 |
| Regions of Italy | 0 | - | 4.92 | 76,420 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,515 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,664 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,494 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,472 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,244 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,354 |
| Counties of England | 0 | - | 4.97 | 799,827 |
| Imagine Lyrics | 0 | - | 4.53 | 43,441 |
| A Quiz About The Beatles | 0 | - | 4.56 | 48,177 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,771 |
| Champions League Winners | 0 | - | 4.92 | 1,010,945 |
| Flags of Asia Quiz | 0 | - | 4.99 | 616,768 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 110,483 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,773 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,129 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,459 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 108,394 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 106,366 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,354 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,901 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,666 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 136,696 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,741 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,958 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,474 |
| Monarchies of Asia | 0 | - | 4.97 | 71,298 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.91 | 50,247 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,084 |
| Countries of the Middle East | 0 | - | 4.96 | 201,875 |
| Provinces of Turkey | 0 | - | 4.94 | 204,925 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,628 |
| Provinces of China | 0 | - | 4.97 | 206,069 |
| Japanese Prefectures | 0 | - | 4.98 | 138,023 |
| States of India | 0 | - | 4.95 | 194,599 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 99,303 |
| Flags of Africa Quiz | 0 | - | 5.00 | 474,151 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,442 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,575 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,941 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 161,649 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,572 |
| African Diaspora - Top 10 Countries | 0 | - | 4.93 | 72,971 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 154,014 |
| The Only African Country ... | 0 | - | 4.99 | 129,354 |
| African Countries by a Single Clue | 0 | - | 4.92 | 68,249 |
| Top African Languages on a Map | 0 | - | 4.94 | 74,637 |
| African Island Countries | 0 | - | 4.96 | 101,983 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,049 |
| Pixelated Africa Map | 0 | - | 4.98 | 100,147 |
| Countries Closest to Africa | 0 | - | 4.96 | 157,473 |
| African Countries That Have Been to the FIFA World Cup | 0 | - | 4.89 | 58,722 |
| Morocco Country Quiz | 0 | - | 4.81 | 46,626 |
| Countries Bordering South Africa | 0 | - | 4.97 | 92,842 |
| Countries Closest to South Africa with Exceptions | 0 | - | 4.81 | 64,041 |
| Countries Bordering D.R. Congo | 0 | - | 4.97 | 64,664 |
| Palau Country Quiz | 0 | - | 4.90 | 23,072 |
| Most Visited Countries by Australians | 0 | - | 4.95 | 90,726 |
| Countries that Visit Australia the Most | 0 | - | 4.92 | 69,354 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,207 |
| Countries that Beat Australia | 0 | - | 4.92 | 93,106 |
| Tuvalu Country Quiz | 0 | - | 4.86 | 21,493 |
| Samoa Country Quiz | 0 | - | 4.81 | 20,880 |
| Tonga Country Quiz | 0 | - | 4.83 | 20,564 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,494 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,622 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,478 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,619 |
| States of Mexico | 0 | - | 4.96 | 177,114 |
| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,720 |
| Mexico States Map Quiz | 0 | - | 4.84 | 105,284 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 105,186 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 54,287 |
| Brazil States Map Quiz | 0 | - | 4.86 | 48,320 |
| States of Brazil | 0 | - | 4.97 | 88,846 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,842 |
| Central American Countries | 0 | - | 4.98 | 156,900 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 113,030 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 149,294 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,183 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,970 |
