| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,596 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,121 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,105 |
| North America Map Quiz | 0 | - | 4.98 | 244,104 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,349 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,560 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 93,841 |
| States of Mexico | 0 | - | 4.95 | 173,150 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,074 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 52,826 |
| States of Brazil | 0 | - | 4.98 | 86,256 |
| American Countries on the Pacific Coast | 0 | - | 4.80 | 49,003 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,110 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,568 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,378 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 216,406 |
| Canada Multiple Choice Quiz | 0 | - | 4.53 | 48,866 |
| Canada Geography Trivia | 0 | - | 4.80 | 47,347 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 276,983 |
| Australian Capitals | 0 | - | 4.92 | 62,586 |
| Name a Valid Answer - United States #1 | 0 | - | 4.61 | 93,397 |
| U.S. Highway Signs By State | 0 | - | 4.46 | 15,377 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,540 |
| Official European Union Languages | 0 | - | 4.97 | 236,396 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,620 |
| Europe Map Quiz | 0 | - | 5.00 | 4,728,457 |
| Africa Map Quiz | 0 | - | 5.00 | 2,103,135 |
| Oceania Map Quiz | 0 | - | 4.98 | 634,685 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,754 |
| Native American Tribes in the US | 0 | - | 4.70 | 25,252 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,938 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,438,524 |
| Asia Map Quiz | 0 | - | 4.99 | 906,168 |
| Countries of Africa | 0 | - | 5.00 | 2,505,426 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,752 |
| African East Coast | 0 | - | 4.96 | 94,958 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,835 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,736 |
| Australia Map Quiz | 0 | - | 4.94 | 342,290 |
| Largest Land Animals of the Americas | 0 | - | 4.38 | 20,191 |
| New World Crops | 0 | - | 4.33 | 23,498 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,607 |
| History of Mexico | 0 | - | 4.58 | 15,223 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,179 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,459 |
| Word Chain - South America | 0 | - | 4.51 | 23,758 |
| North American Physical Geography | 0 | - | 4.35 | 30,351 |
| United States Map Quiz | 0 | - | 4.98 | 4,140,199 |
| Most Populous Native American Tribes | 0 | - | 4.28 | 12,402 |
| Top U.S. Cash Crops | 0 | - | 4.39 | 62,070 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.21 | 52,511 |
| Largest Asian-American Ethnic Groups | 0 | - | 4.11 | 40,773 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 209,915 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,162 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,796 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,133 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,492 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,390 |
| The Only European Country ... | 0 | - | 4.91 | 213,575 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,370 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,538 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,355 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,375,250 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,389 |
| Flags of Africa Quiz | 0 | - | 5.00 | 462,552 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,524 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,489 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,179 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,448 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 151,966 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,301 |
| African Island Countries | 0 | - | 4.96 | 100,693 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,505 |
| Australian States and Territories | 0 | - | 4.95 | 140,578 |
| Australian Immigration by Country | 0 | - | 4.81 | 76,996 |
| Australia True or False | 0 | - | 4.87 | 56,479 |
| Flags of North and South America | 0 | - | 4.99 | 366,094 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 127,985 |
| South America Map Quiz | 0 | - | 5.00 | 1,540,550 |
| South American Physical Geography | 0 | - | 4.58 | 18,263 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,010,763 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,472 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,521 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,466 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,228 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,224,795 |
| Celtic Nations | 0 | - | 4.69 | 46,800 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,318,808 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,616 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,219 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,115 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,421 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,801 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,631 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,619 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,210 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,183 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,092 |
| Slavic Countries | 0 | - | 4.96 | 110,791 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,023 |
| Counties of England | 0 | - | 4.97 | 788,547 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,324 |
| Flags of Asia Quiz | 0 | - | 4.99 | 604,765 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 109,291 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,693 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,338 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,154 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,610 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,396 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 70,613 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 228,660 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.93 | 49,059 |
| Countries of the Middle East | 0 | - | 4.96 | 198,758 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,223 |
| States of India | 0 | - | 4.94 | 189,804 |
| 10 African Countries with the Most Tourists | 0 | - | 4.39 | 60,117 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 48,983 |
| African Diaspora - Top 10 Countries | 0 | - | 4.92 | 72,209 |
| The Only African Country ... | 0 | - | 4.99 | 128,293 |
| African Countries by a Single Clue | 0 | - | 4.92 | 67,748 |
| Pixelated Africa Map | 0 | - | 4.98 | 98,996 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.42 | 319,227 |
| Countries Closest to Africa | 0 | - | 4.96 | 156,035 |
| Flags of Oceania | 0 | - | 5.00 | 254,782 |
| All First-Level Subdivisions of Oceania on a Map | 0 | - | 4.97 | 26,883 |
| Australia Cities Map Quiz | 0 | - | 4.83 | 144,347 |
| Australia Country Quiz | 0 | - | 4.43 | 69,247 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,022 |
| Regions of New Zealand | 0 | - | 4.85 | 28,106 |
| The Only American Country ... | 0 | - | 4.92 | 120,684 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,279 |
| Places Mentioned in the Song "Kokomo" | 0 | - | 4.44 | 16,957 |
| Famous People from South America | 0 | - | 4.15 | 21,776 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,557 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 56,888 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 62,836 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,885 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,219 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,795 |
| The U.S. Pledge of Allegiance | 0 | - | 3.98 | 18,282 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 72,997 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,448 |
| US States Quiz | 0 | - | 5.00 | 16,684,736 |
| U.S. Geography - Multiple Choice | 0 | - | 4.41 | 24,650 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 104,310 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,279 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 94,978 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,255 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,714 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,140 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,105 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,705 |
| Monarchies of Europe | 0 | - | 4.90 | 97,239 |
| European Countries with One Border | 0 | - | 4.97 | 181,507 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,022 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,145 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,820 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,703 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,123 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,028 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,587 |
| States of Germany | 0 | - | 4.96 | 149,863 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,936 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,493 |
| Regions of Italy | 0 | - | 4.92 | 74,618 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,755 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,178 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,070 |
| UK Cities Map Quiz | 0 | - | 4.95 | 461,976 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,861 |
| Counties of England Map Quiz | 0 | - | 4.97 | 305,984 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,395 |
| Champions League Winners | 0 | - | 4.92 | 995,366 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 65,942 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 104,948 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,268 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 133,615 |
| Pixelated Asia Map | 0 | - | 4.90 | 72,328 |
| Monarchies of Asia | 0 | - | 4.97 | 70,550 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,396 |
| Provinces of Turkey | 0 | - | 4.95 | 200,419 |
| Provinces of China | 0 | - | 4.97 | 199,795 |
| Japanese Prefectures | 0 | - | 4.98 | 134,374 |
| Countries Kim Jong Un Has Been To | 0 | - | 4.95 | 32,144 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,746 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,614 |
| Countries Closest to Taiwan | 0 | - | 4.81 | 92,737 |
| Kazakhstan Country Quiz | 0 | - | 4.85 | 30,525 |
| Bhutan Country Quiz | 0 | - | 4.87 | 23,996 |
| States of India Map Quiz | 0 | - | 4.82 | 25,989 |
| Countries Bordering India | 0 | - | 4.98 | 162,554 |
| Countries Closest to India | 0 | - | 4.97 | 102,163 |
| Countries with the Most Ascents of Mount Everest | 0 | - | 4.95 | 57,727 |
| Nepal Country Quiz | 0 | - | 4.95 | 37,294 |
| African Great Lakes | 0 | - | 4.82 | 65,068 |
| Every African Country Shape | 0 | - | 4.90 | 85,896 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,807 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,138 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,314 |
| Name a Valid African Country | 0 | - | 4.98 | 152,845 |
