| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,596 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,126 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,113 |
| North America Map Quiz | 0 | - | 4.98 | 244,144 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,355 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,566 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 93,847 |
| States of Mexico | 0 | - | 4.95 | 173,174 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,087 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 52,841 |
| States of Brazil | 0 | - | 4.98 | 86,276 |
| American Countries on the Pacific Coast | 0 | - | 4.80 | 49,004 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,144 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,573 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,399 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 216,458 |
| Canada Multiple Choice Quiz | 0 | - | 4.53 | 48,868 |
| Canada Geography Trivia | 0 | - | 4.80 | 47,348 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,005 |
| Australian Capitals | 0 | - | 4.92 | 62,586 |
| Name a Valid Answer - United States #1 | 0 | - | 4.61 | 93,403 |
| U.S. Highway Signs By State | 0 | - | 4.46 | 15,377 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,546 |
| Official European Union Languages | 0 | - | 4.97 | 236,414 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,633 |
| Europe Map Quiz | 0 | - | 5.00 | 4,728,823 |
| Africa Map Quiz | 0 | - | 5.00 | 2,103,309 |
| Oceania Map Quiz | 0 | - | 4.98 | 634,784 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,754 |
| Native American Tribes in the US | 0 | - | 4.70 | 25,253 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,968 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,438,600 |
| Asia Map Quiz | 0 | - | 4.99 | 906,310 |
| Countries of Africa | 0 | - | 5.00 | 2,505,738 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,757 |
| African East Coast | 0 | - | 4.96 | 94,971 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,847 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,742 |
| Australia Map Quiz | 0 | - | 4.94 | 342,330 |
| Largest Land Animals of the Americas | 0 | - | 4.38 | 20,191 |
| New World Crops | 0 | - | 4.33 | 23,499 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,608 |
| History of Mexico | 0 | - | 4.58 | 15,224 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,182 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,461 |
| 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 | 4,140,364 |
| Most Populous Native American Tribes | 0 | - | 4.28 | 12,403 |
| Top U.S. Cash Crops | 0 | - | 4.39 | 62,073 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.21 | 52,511 |
| Largest Asian-American Ethnic Groups | 0 | - | 4.11 | 40,775 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 209,951 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,165 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,826 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,154 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,500 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,414 |
| The Only European Country ... | 0 | - | 4.91 | 213,610 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,397 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,544 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,375 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,375,342 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,400 |
| Flags of Africa Quiz | 0 | - | 5.00 | 462,665 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,534 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,503 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,186 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,455 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 151,981 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,315 |
| African Island Countries | 0 | - | 4.96 | 100,700 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,524 |
| Australian States and Territories | 0 | - | 4.95 | 140,595 |
| Australian Immigration by Country | 0 | - | 4.81 | 76,997 |
| Australia True or False | 0 | - | 4.87 | 56,483 |
| Flags of North and South America | 0 | - | 4.99 | 366,285 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,018 |
| South America Map Quiz | 0 | - | 5.00 | 1,540,648 |
| South American Physical Geography | 0 | - | 4.58 | 18,264 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,010,881 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,511 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,572 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,468 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,228 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,225,088 |
| Celtic Nations | 0 | - | 4.69 | 46,802 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,021 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,630 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,232 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,156 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,427 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,808 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,655 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,683 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,230 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,188 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,094 |
| Slavic Countries | 0 | - | 4.96 | 110,799 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,029 |
| Counties of England | 0 | - | 4.97 | 788,653 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,449 |
| Flags of Asia Quiz | 0 | - | 4.99 | 604,906 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 109,304 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,702 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,344 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,164 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,623 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,406 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 70,625 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 228,683 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.93 | 49,079 |
| Countries of the Middle East | 0 | - | 4.96 | 198,780 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,227 |
| States of India | 0 | - | 4.94 | 189,848 |
| 10 African Countries with the Most Tourists | 0 | - | 4.39 | 60,120 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 48,987 |
| African Diaspora - Top 10 Countries | 0 | - | 4.92 | 72,214 |
| The Only African Country ... | 0 | - | 4.99 | 128,302 |
| African Countries by a Single Clue | 0 | - | 4.92 | 67,751 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,006 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.42 | 319,236 |
| Countries Closest to Africa | 0 | - | 4.96 | 156,049 |
| Flags of Oceania | 0 | - | 5.00 | 254,852 |
| All First-Level Subdivisions of Oceania on a Map | 0 | - | 4.97 | 26,884 |
| Australia Cities Map Quiz | 0 | - | 4.83 | 144,363 |
| Australia Country Quiz | 0 | - | 4.43 | 69,249 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,028 |
| Regions of New Zealand | 0 | - | 4.85 | 28,108 |
| The Only American Country ... | 0 | - | 4.92 | 120,690 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,286 |
| Places Mentioned in the Song "Kokomo" | 0 | - | 4.44 | 16,962 |
| Famous People from South America | 0 | - | 4.15 | 21,778 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,595 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 56,894 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 62,848 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,893 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,234 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,804 |
| The U.S. Pledge of Allegiance | 0 | - | 3.98 | 18,282 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 72,998 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,458 |
| US States Quiz | 0 | - | 5.00 | 16,687,001 |
| U.S. Geography - Multiple Choice | 0 | - | 4.41 | 24,651 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 104,319 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,285 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 94,987 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,270 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,738 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,151 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,113 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,723 |
| Monarchies of Europe | 0 | - | 4.90 | 97,249 |
| European Countries with One Border | 0 | - | 4.97 | 181,515 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,152 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,161 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,834 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,748 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,131 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,040 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,600 |
| States of Germany | 0 | - | 4.96 | 149,884 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,963 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,497 |
| Regions of Italy | 0 | - | 4.92 | 74,624 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,765 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,195 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,079 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,002 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,865 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,002 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,397 |
| Champions League Winners | 0 | - | 4.92 | 995,547 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 65,954 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 104,959 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,283 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 133,641 |
| Pixelated Asia Map | 0 | - | 4.90 | 72,339 |
| Monarchies of Asia | 0 | - | 4.97 | 70,557 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,402 |
| Provinces of Turkey | 0 | - | 4.95 | 200,624 |
| Provinces of China | 0 | - | 4.97 | 199,829 |
| Japanese Prefectures | 0 | - | 4.98 | 134,398 |
| Countries Kim Jong Un Has Been To | 0 | - | 4.95 | 32,156 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,763 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,621 |
| Countries Closest to Taiwan | 0 | - | 4.81 | 92,744 |
| Kazakhstan Country Quiz | 0 | - | 4.85 | 30,596 |
| Bhutan Country Quiz | 0 | - | 4.87 | 23,999 |
| States of India Map Quiz | 0 | - | 4.82 | 25,994 |
| Countries Bordering India | 0 | - | 4.98 | 162,557 |
| Countries Closest to India | 0 | - | 4.97 | 102,169 |
| Countries with the Most Ascents of Mount Everest | 0 | - | 4.95 | 57,737 |
| Nepal Country Quiz | 0 | - | 4.95 | 37,300 |
| African Great Lakes | 0 | - | 4.82 | 65,073 |
| Every African Country Shape | 0 | - | 4.90 | 85,935 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,812 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,142 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,324 |
| Name a Valid African Country | 0 | - | 4.98 | 152,857 |
