| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,601 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,158 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,167 |
| North America Map Quiz | 0 | - | 4.98 | 244,487 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,380 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,621 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 93,900 |
| States of Mexico | 0 | - | 4.95 | 173,356 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,157 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 52,971 |
| States of Brazil | 0 | - | 4.98 | 86,391 |
| American Countries on the Pacific Coast | 0 | - | 4.80 | 49,015 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,362 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,582 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,538 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 216,734 |
| Canada Multiple Choice Quiz | 0 | - | 4.53 | 48,899 |
| Canada Geography Trivia | 0 | - | 4.80 | 47,369 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,110 |
| Australian Capitals | 0 | - | 4.92 | 62,594 |
| Name a Valid Answer - United States #1 | 0 | - | 4.61 | 93,450 |
| U.S. Highway Signs By State | 0 | - | 4.46 | 15,387 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,584 |
| Official European Union Languages | 0 | - | 4.97 | 236,557 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,707 |
| Europe Map Quiz | 0 | - | 5.00 | 4,731,541 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,429 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,355 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,755 |
| Native American Tribes in the US | 0 | - | 4.72 | 25,263 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,214 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,440,530 |
| Asia Map Quiz | 0 | - | 4.99 | 907,074 |
| Countries of Africa | 0 | - | 5.00 | 2,508,040 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,821 |
| African East Coast | 0 | - | 4.96 | 95,057 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,929 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,806 |
| Australia Map Quiz | 0 | - | 4.94 | 342,500 |
| Largest Land Animals of the Americas | 0 | - | 4.38 | 20,194 |
| New World Crops | 0 | - | 4.33 | 23,502 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,614 |
| History of Mexico | 0 | - | 4.58 | 15,231 |
| South American Geography Quiz #2 | 0 | - | 4.62 | 39,198 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,471 |
| Word Chain - South America | 0 | - | 4.51 | 23,765 |
| North American Physical Geography | 0 | - | 4.35 | 30,356 |
| United States Map Quiz | 0 | - | 4.98 | 4,141,983 |
| Most Populous Native American Tribes | 0 | - | 4.28 | 12,406 |
| Top U.S. Cash Crops | 0 | - | 4.39 | 62,089 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.21 | 52,521 |
| Largest Asian-American Ethnic Groups | 0 | - | 4.11 | 40,795 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,159 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,211 |
| Countries That Use the Euro | 0 | - | 4.96 | 103,005 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,312 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,541 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,571 |
| The Only European Country ... | 0 | - | 4.91 | 213,847 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,545 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,569 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,477 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,375,949 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,436 |
| Flags of Africa Quiz | 0 | - | 5.00 | 463,431 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,632 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,582 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,282 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,509 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,119 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,468 |
| African Island Countries | 0 | - | 4.96 | 100,794 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,667 |
| Australian States and Territories | 0 | - | 4.96 | 140,912 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,021 |
| Australia True or False | 0 | - | 4.87 | 56,510 |
| Flags of North and South America | 0 | - | 4.99 | 367,281 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,240 |
| South America Map Quiz | 0 | - | 5.00 | 1,541,277 |
| South American Physical Geography | 0 | - | 4.58 | 18,271 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,011,720 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,946 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,985 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,499 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,242 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,226,794 |
| Celtic Nations | 0 | - | 4.69 | 46,812 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,836 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,718 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,294 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,347 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,476 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,854 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,840 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,909 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,455 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,271 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,207 |
| Slavic Countries | 0 | - | 4.96 | 110,863 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,049 |
| Counties of England | 0 | - | 4.97 | 789,223 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,946 |
| Flags of Asia Quiz | 0 | - | 4.99 | 605,623 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 109,346 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,771 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,425 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,257 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,712 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,497 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 70,690 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 228,779 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.93 | 49,163 |
| Countries of the Middle East | 0 | - | 4.96 | 198,938 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,251 |
| States of India | 0 | - | 4.94 | 190,082 |
| 10 African Countries with the Most Tourists | 0 | - | 4.39 | 60,161 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,005 |
| African Diaspora - Top 10 Countries | 0 | - | 4.92 | 72,251 |
| The Only African Country ... | 0 | - | 4.99 | 128,368 |
| African Countries by a Single Clue | 0 | - | 4.92 | 67,779 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,072 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.42 | 319,353 |
| Countries Closest to Africa | 0 | - | 4.96 | 156,112 |
| Flags of Oceania | 0 | - | 5.00 | 255,224 |
| All First-Level Subdivisions of Oceania on a Map | 0 | - | 4.97 | 26,921 |
| Australia Cities Map Quiz | 0 | - | 4.83 | 144,433 |
| Australia Country Quiz | 0 | - | 4.43 | 69,285 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,060 |
| Regions of New Zealand | 0 | - | 4.85 | 28,141 |
| The Only American Country ... | 0 | - | 4.92 | 120,764 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,346 |
| Places Mentioned in the Song "Kokomo" | 0 | - | 4.44 | 16,967 |
| Famous People from South America | 0 | - | 4.15 | 21,787 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,814 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 56,972 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 62,996 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,962 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,340 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,876 |
| The U.S. Pledge of Allegiance | 0 | - | 3.98 | 18,297 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,081 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,500 |
| US States Quiz | 0 | - | 5.00 | 16,701,895 |
| U.S. Geography - Multiple Choice | 0 | - | 4.41 | 24,662 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 104,372 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,336 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,044 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,401 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,864 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,221 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,148 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,816 |
| Monarchies of Europe | 0 | - | 4.90 | 97,325 |
| European Countries with One Border | 0 | - | 4.97 | 181,636 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,529 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,272 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,953 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,013 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,210 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,132 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,687 |
| States of Germany | 0 | - | 4.96 | 150,064 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,018 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,521 |
| Regions of Italy | 0 | - | 4.92 | 74,730 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,816 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,357 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,197 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,171 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,917 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,092 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,417 |
| Champions League Winners | 0 | - | 4.92 | 996,394 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,003 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 105,052 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,364 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 133,797 |
| Pixelated Asia Map | 0 | - | 4.90 | 72,413 |
| Monarchies of Asia | 0 | - | 4.97 | 70,608 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,434 |
| Provinces of Turkey | 0 | - | 4.95 | 201,033 |
| Provinces of China | 0 | - | 4.97 | 200,154 |
| Japanese Prefectures | 0 | - | 4.98 | 134,599 |
| Countries Kim Jong Un Has Been To | 0 | - | 4.95 | 32,217 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,906 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,684 |
| Countries Closest to Taiwan | 0 | - | 4.81 | 92,786 |
| Kazakhstan Country Quiz | 0 | - | 4.85 | 31,125 |
| Bhutan Country Quiz | 0 | - | 4.87 | 24,016 |
| States of India Map Quiz | 0 | - | 4.82 | 26,039 |
| Countries Bordering India | 0 | - | 4.98 | 162,605 |
| Countries Closest to India | 0 | - | 4.97 | 102,211 |
| Countries with the Most Ascents of Mount Everest | 0 | - | 4.95 | 57,778 |
| Nepal Country Quiz | 0 | - | 4.95 | 37,334 |
| African Great Lakes | 0 | - | 4.82 | 65,160 |
| Every African Country Shape | 0 | - | 4.90 | 86,129 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,865 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,181 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,366 |
| Name a Valid African Country | 0 | - | 4.98 | 152,944 |
