| Australian Capitals | 0 | - | 4.92 | 62,769 |
| Countries by National Anthem | 0 | - | 4.93 | 71,314 |
| Australia True or False | 0 | - | 4.87 | 56,978 |
| Non-Stop Flights to New Zealand | 0 | - | 4.46 | 48,133 |
| All First-Level Subdivisions of Oceania on a Map | 0 | - | 4.97 | 27,459 |
| Regions of New Zealand | 0 | - | 4.84 | 28,607 |
| Australia Country Quiz | 0 | - | 4.43 | 69,689 |
| Twelve Days of Christmas | 0 | - | 4.45 | 146,103 |
| Rudolph the Red-Nosed Reindeer | 0 | - | 4.53 | 76,351 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,828 |
| New Zealand Country Quiz | 0 | - | 4.70 | 76,113 |
| Europe Map Quiz | 0 | - | 5.00 | 4,773,444 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,236 |
| Elton John Quiz | 0 | - | 4.49 | 18,497 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,160 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,818 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,687 |
| Christmas Song Lyrics | 0 | - | 4.19 | 70,687 |
| Oceania Map Quiz | 0 | - | 4.98 | 655,048 |
| Word Chain - Australia | 0 | - | 4.38 | 38,178 |
| America the Beautiful Lyrics | 0 | - | 4.27 | 19,772 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,373 |
| Official European Union Languages | 0 | - | 4.97 | 239,024 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,199 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,378 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,971 |
| Asia Map Quiz | 0 | - | 4.99 | 920,316 |
| Africa Map Quiz | 0 | - | 5.00 | 2,122,589 |
| First Lines of Christmas Songs | 0 | - | 4.27 | 150,846 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,083 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,014 |
| Australia Map Quiz | 0 | - | 4.95 | 345,342 |
| United States Map Quiz | 0 | - | 4.98 | 4,164,396 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,930 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,760 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,717 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,209 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,134 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,823 |
| The Only European Country ... | 0 | - | 4.91 | 217,605 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,714 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,930 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,895 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,969 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,396 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,385,137 |
| Countries of Africa | 0 | - | 5.00 | 2,546,751 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,162 |
| African East Coast | 0 | - | 4.96 | 96,352 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,207 |
| Christmas Carol Lyrics | 0 | - | 4.20 | 12,517 |
| Flags of Oceania | 0 | - | 5.00 | 260,827 |
| Oceania Physical Geography | 0 | - | 4.30 | 12,702 |
| Australian States and Territories | 0 | - | 4.96 | 142,329 |
| Famous Australians by Description | 0 | - | 4.23 | 28,022 |
| Australia Cities Map Quiz | 0 | - | 4.82 | 145,844 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,379 |
| Australian Slang | 0 | - | 4.24 | 28,662 |
| Flags of North and South America | 0 | - | 4.99 | 374,650 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,740 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,443 |
| The Only American Country ... | 0 | - | 4.92 | 121,858 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,324 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,178 |
| South America Map Quiz | 0 | - | 5.00 | 1,552,223 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,654 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 903,099 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,026,513 |
| North American Capitals - Map Quiz | 0 | - | 4.88 | 58,279 |
| North America Map Quiz | 0 | - | 4.98 | 249,657 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 94,904 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 64,463 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,642 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,809 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,824 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,651 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 74,470 |
| Who Did that Motown Song? | 0 | - | 4.48 | 13,063 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 40,064 |
| US States Quiz | 0 | - | 5.00 | 16,927,847 |
| Canada Provinces and Territories | 0 | - | 5.00 | 344,001 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 642,045 |
| Canadian Musical Acts by Two Songs | 0 | - | 4.03 | 28,749 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,337 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 105,253 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,989 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,439 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,249,749 |
| Celtic Nations | 0 | - | 4.69 | 47,006 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,031 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,331,437 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,003 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,506 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,093 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,561 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,930 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,416 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,802 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,671 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,440 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,583 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,574 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,047 |
| Monarchies of Europe | 0 | - | 4.90 | 98,410 |
| European Countries with One Border | 0 | - | 4.97 | 183,202 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,979 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,733 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,816 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,651 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,474 |
| Slavic Countries | 0 | - | 4.96 | 111,956 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,201 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,153 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,930 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,282 |
| States of Germany | 0 | - | 4.95 | 153,411 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,509 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,328 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,234 |
| Regions of Italy | 0 | - | 4.92 | 76,346 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,476 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,576 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,458 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,363 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,206 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,311 |
| Counties of England | 0 | - | 4.97 | 799,467 |
| Imagine Lyrics | 0 | - | 4.53 | 43,432 |
| A Quiz About The Beatles | 0 | - | 4.56 | 48,148 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,765 |
| Champions League Winners | 0 | - | 4.92 | 1,010,522 |
| Flags of Asia Quiz | 0 | - | 4.99 | 616,435 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 110,454 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,752 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,093 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,408 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 108,287 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 106,329 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,310 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,856 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,624 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 136,616 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,694 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,899 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,433 |
| Monarchies of Asia | 0 | - | 4.97 | 71,270 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.91 | 50,214 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,058 |
| Countries of the Middle East | 0 | - | 4.96 | 201,802 |
| Provinces of Turkey | 0 | - | 4.94 | 204,811 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,621 |
| Provinces of China | 0 | - | 4.97 | 205,915 |
| Japanese Prefectures | 0 | - | 4.98 | 137,858 |
| States of India | 0 | - | 4.95 | 194,399 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 99,151 |
| Flags of Africa Quiz | 0 | - | 5.00 | 473,700 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,422 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,450 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,839 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 161,545 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,472 |
| African Diaspora - Top 10 Countries | 0 | - | 4.93 | 72,914 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,938 |
| The Only African Country ... | 0 | - | 4.99 | 129,313 |
| African Countries by a Single Clue | 0 | - | 4.92 | 68,228 |
| Top African Languages on a Map | 0 | - | 4.92 | 74,577 |
| African Island Countries | 0 | - | 4.96 | 101,932 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,984 |
| Pixelated Africa Map | 0 | - | 4.98 | 100,114 |
| Countries Closest to Africa | 0 | - | 4.96 | 157,445 |
| African Countries That Have Been to the FIFA World Cup | 0 | - | 4.89 | 58,603 |
| Morocco Country Quiz | 0 | - | 4.81 | 46,611 |
| Countries Bordering South Africa | 0 | - | 4.97 | 92,831 |
| Countries Closest to South Africa with Exceptions | 0 | - | 4.81 | 64,029 |
| Countries Bordering D.R. Congo | 0 | - | 4.97 | 64,650 |
| Palau Country Quiz | 0 | - | 4.90 | 23,064 |
| Most Visited Countries by Australians | 0 | - | 4.95 | 90,709 |
| Countries that Visit Australia the Most | 0 | - | 4.92 | 69,318 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,181 |
| Countries that Beat Australia | 0 | - | 4.92 | 93,069 |
| Tuvalu Country Quiz | 0 | - | 4.86 | 21,490 |
| Samoa Country Quiz | 0 | - | 4.81 | 20,878 |
| Tonga Country Quiz | 0 | - | 4.83 | 20,559 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,483 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,561 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,437 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,603 |
| States of Mexico | 0 | - | 4.96 | 176,939 |
| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,708 |
| Mexico States Map Quiz | 0 | - | 4.84 | 105,235 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 105,162 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 54,246 |
| Brazil States Map Quiz | 0 | - | 4.86 | 48,287 |
| States of Brazil | 0 | - | 4.97 | 88,752 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,828 |
| Central American Countries | 0 | - | 4.98 | 156,862 |
| Caribbean Countries and Territories | 0 | - | 4.81 | 113,006 |
| Caribbean / Lesser Antilles Map Quiz | 0 | - | 4.99 | 149,213 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,158 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,944 |
