| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,597 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,126 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,116 |
| North America Map Quiz | 0 | - | 4.98 | 244,167 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,358 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,570 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 93,851 |
| States of Mexico | 0 | - | 4.95 | 173,184 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,092 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 52,860 |
| States of Brazil | 0 | - | 4.98 | 86,282 |
| American Countries on the Pacific Coast | 0 | - | 4.80 | 49,004 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,152 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,573 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,405 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 216,469 |
| 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 | 277,012 |
| Australian Capitals | 0 | - | 4.92 | 62,587 |
| Name a Valid Answer - United States #1 | 0 | - | 4.61 | 93,407 |
| U.S. Highway Signs By State | 0 | - | 4.46 | 15,377 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,547 |
| Official European Union Languages | 0 | - | 4.97 | 236,420 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,636 |
| Europe Map Quiz | 0 | - | 5.00 | 4,728,983 |
| Africa Map Quiz | 0 | - | 5.00 | 2,103,386 |
| Oceania Map Quiz | 0 | - | 4.98 | 634,803 |
| 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 | 424,981 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,438,921 |
| Asia Map Quiz | 0 | - | 4.99 | 906,368 |
| Countries of Africa | 0 | - | 5.00 | 2,505,858 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,761 |
| African East Coast | 0 | - | 4.96 | 94,975 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,852 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,746 |
| Australia Map Quiz | 0 | - | 4.94 | 342,340 |
| 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 | 54,609 |
| 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 | 4,140,456 |
| Most Populous Native American Tribes | 0 | - | 4.28 | 12,403 |
| Top U.S. Cash Crops | 0 | - | 4.39 | 62,075 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.21 | 52,514 |
| Largest Asian-American Ethnic Groups | 0 | - | 4.11 | 40,775 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 209,965 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,165 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,837 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,172 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,508 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,422 |
| The Only European Country ... | 0 | - | 4.91 | 213,625 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,412 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,544 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,379 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,375,377 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,403 |
| Flags of Africa Quiz | 0 | - | 5.00 | 462,699 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,537 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,511 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,191 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,459 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 151,989 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,320 |
| African Island Countries | 0 | - | 4.96 | 100,706 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,532 |
| Australian States and Territories | 0 | - | 4.95 | 140,598 |
| Australian Immigration by Country | 0 | - | 4.81 | 76,998 |
| Australia True or False | 0 | - | 4.87 | 56,485 |
| Flags of North and South America | 0 | - | 4.99 | 366,337 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,022 |
| South America Map Quiz | 0 | - | 5.00 | 1,540,675 |
| South American Physical Geography | 0 | - | 4.58 | 18,264 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,010,939 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,537 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,595 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,469 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,228 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,225,189 |
| Celtic Nations | 0 | - | 4.69 | 46,802 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,099 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,637 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,237 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,164 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,429 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,812 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,665 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,690 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,239 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,193 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,096 |
| Slavic Countries | 0 | - | 4.96 | 110,803 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,030 |
| Counties of England | 0 | - | 4.97 | 788,710 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,493 |
| Flags of Asia Quiz | 0 | - | 4.99 | 604,940 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 109,309 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,704 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,348 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,168 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,630 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,411 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 70,632 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 228,687 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.93 | 49,083 |
| Countries of the Middle East | 0 | - | 4.96 | 198,789 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,228 |
| States of India | 0 | - | 4.94 | 189,852 |
| 10 African Countries with the Most Tourists | 0 | - | 4.39 | 60,122 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 48,987 |
| African Diaspora - Top 10 Countries | 0 | - | 4.92 | 72,218 |
| The Only African Country ... | 0 | - | 4.99 | 128,305 |
| African Countries by a Single Clue | 0 | - | 4.92 | 67,752 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,011 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.42 | 319,237 |
| Countries Closest to Africa | 0 | - | 4.96 | 156,051 |
| Flags of Oceania | 0 | - | 5.00 | 254,871 |
| All First-Level Subdivisions of Oceania on a Map | 0 | - | 4.97 | 26,886 |
| Australia Cities Map Quiz | 0 | - | 4.83 | 144,364 |
| Australia Country Quiz | 0 | - | 4.43 | 69,253 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,031 |
| Regions of New Zealand | 0 | - | 4.85 | 28,108 |
| The Only American Country ... | 0 | - | 4.92 | 120,695 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,290 |
| 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 | 899,610 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 56,897 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 62,854 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,897 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,239 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,812 |
| The U.S. Pledge of Allegiance | 0 | - | 3.98 | 18,282 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,003 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,459 |
| US States Quiz | 0 | - | 5.00 | 16,687,921 |
| U.S. Geography - Multiple Choice | 0 | - | 4.41 | 24,651 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 104,325 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,288 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 94,989 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,280 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,757 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,155 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,113 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,726 |
| Monarchies of Europe | 0 | - | 4.90 | 97,255 |
| European Countries with One Border | 0 | - | 4.97 | 181,523 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,192 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,167 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,838 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,756 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,131 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,046 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,609 |
| States of Germany | 0 | - | 4.96 | 149,894 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,966 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,500 |
| Regions of Italy | 0 | - | 4.92 | 74,629 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,768 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,202 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,085 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,017 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,867 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,011 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,399 |
| Champions League Winners | 0 | - | 4.92 | 995,604 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 65,958 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 104,964 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,293 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 133,648 |
| Pixelated Asia Map | 0 | - | 4.90 | 72,342 |
| Monarchies of Asia | 0 | - | 4.97 | 70,560 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,407 |
| Provinces of Turkey | 0 | - | 4.95 | 200,676 |
| Provinces of China | 0 | - | 4.97 | 199,843 |
| Japanese Prefectures | 0 | - | 4.98 | 134,409 |
| Countries Kim Jong Un Has Been To | 0 | - | 4.95 | 32,160 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,765 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,626 |
| Countries Closest to Taiwan | 0 | - | 4.81 | 92,750 |
| Kazakhstan Country Quiz | 0 | - | 4.85 | 30,619 |
| Bhutan Country Quiz | 0 | - | 4.87 | 23,999 |
| States of India Map Quiz | 0 | - | 4.82 | 25,996 |
| Countries Bordering India | 0 | - | 4.98 | 162,558 |
| Countries Closest to India | 0 | - | 4.97 | 102,170 |
| Countries with the Most Ascents of Mount Everest | 0 | - | 4.95 | 57,741 |
| Nepal Country Quiz | 0 | - | 4.95 | 37,302 |
| African Great Lakes | 0 | - | 4.82 | 65,077 |
| Every African Country Shape | 0 | - | 4.90 | 85,948 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,816 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,145 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,328 |
| Name a Valid African Country | 0 | - | 4.98 | 152,861 |
