| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,601 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,156 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,165 |
| North America Map Quiz | 0 | - | 4.98 | 244,437 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,379 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,614 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 93,900 |
| States of Mexico | 0 | - | 4.95 | 173,344 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,156 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 52,965 |
| States of Brazil | 0 | - | 4.98 | 86,389 |
| American Countries on the Pacific Coast | 0 | - | 4.80 | 49,014 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,354 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,579 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,534 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 216,719 |
| Canada Multiple Choice Quiz | 0 | - | 4.53 | 48,895 |
| Canada Geography Trivia | 0 | - | 4.80 | 47,366 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,103 |
| Australian Capitals | 0 | - | 4.92 | 62,593 |
| Name a Valid Answer - United States #1 | 0 | - | 4.61 | 93,448 |
| U.S. Highway Signs By State | 0 | - | 4.46 | 15,386 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,581 |
| Official European Union Languages | 0 | - | 4.97 | 236,533 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,703 |
| Europe Map Quiz | 0 | - | 5.00 | 4,731,378 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,323 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,314 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,755 |
| Native American Tribes in the US | 0 | - | 4.72 | 25,262 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,203 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,440,479 |
| Asia Map Quiz | 0 | - | 4.99 | 907,033 |
| Countries of Africa | 0 | - | 5.00 | 2,507,889 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,815 |
| African East Coast | 0 | - | 4.96 | 95,054 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,926 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,800 |
| Australia Map Quiz | 0 | - | 4.94 | 342,485 |
| 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 | 54,613 |
| History of Mexico | 0 | - | 4.58 | 15,230 |
| South American Geography Quiz #2 | 0 | - | 4.62 | 39,195 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,470 |
| 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 | 4,141,860 |
| 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 | 52,519 |
| Largest Asian-American Ethnic Groups | 0 | - | 4.11 | 40,792 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,148 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,210 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,988 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,307 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,540 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,563 |
| The Only European Country ... | 0 | - | 4.91 | 213,838 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,536 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,568 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,471 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,375,921 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,434 |
| Flags of Africa Quiz | 0 | - | 5.00 | 463,400 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,629 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,577 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,276 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,507 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,110 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,453 |
| African Island Countries | 0 | - | 4.96 | 100,791 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,659 |
| Australian States and Territories | 0 | - | 4.95 | 140,876 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,020 |
| Australia True or False | 0 | - | 4.87 | 56,508 |
| Flags of North and South America | 0 | - | 4.99 | 367,235 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,227 |
| South America Map Quiz | 0 | - | 5.00 | 1,541,231 |
| South American Physical Geography | 0 | - | 4.58 | 18,270 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,011,657 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,914 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,966 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,498 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,239 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,226,664 |
| Celtic Nations | 0 | - | 4.69 | 46,812 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,774 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,716 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,291 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,329 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,471 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,851 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,826 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,888 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,440 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,268 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,206 |
| Slavic Countries | 0 | - | 4.96 | 110,858 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,048 |
| Counties of England | 0 | - | 4.97 | 789,199 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,932 |
| Flags of Asia Quiz | 0 | - | 4.99 | 605,571 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 109,344 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,762 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,416 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,246 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,707 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,491 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 70,685 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 228,770 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.93 | 49,156 |
| Countries of the Middle East | 0 | - | 4.96 | 198,925 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,244 |
| States of India | 0 | - | 4.94 | 190,041 |
| 10 African Countries with the Most Tourists | 0 | - | 4.39 | 60,161 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,001 |
| African Diaspora - Top 10 Countries | 0 | - | 4.92 | 72,250 |
| The Only African Country ... | 0 | - | 4.99 | 128,367 |
| African Countries by a Single Clue | 0 | - | 4.92 | 67,778 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,069 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.42 | 319,342 |
| Countries Closest to Africa | 0 | - | 4.96 | 156,109 |
| Flags of Oceania | 0 | - | 5.00 | 255,203 |
| All First-Level Subdivisions of Oceania on a Map | 0 | - | 4.97 | 26,918 |
| Australia Cities Map Quiz | 0 | - | 4.83 | 144,426 |
| Australia Country Quiz | 0 | - | 4.43 | 69,281 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,057 |
| Regions of New Zealand | 0 | - | 4.85 | 28,140 |
| The Only American Country ... | 0 | - | 4.92 | 120,761 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,341 |
| Places Mentioned in the Song "Kokomo" | 0 | - | 4.44 | 16,967 |
| Famous People from South America | 0 | - | 4.15 | 21,784 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,793 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 56,969 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 62,988 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,961 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,328 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,871 |
| The U.S. Pledge of Allegiance | 0 | - | 3.98 | 18,295 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,074 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,493 |
| US States Quiz | 0 | - | 5.00 | 16,701,045 |
| U.S. Geography - Multiple Choice | 0 | - | 4.41 | 24,661 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 104,368 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,332 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,043 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,394 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,861 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,215 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,147 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,811 |
| Monarchies of Europe | 0 | - | 4.90 | 97,313 |
| European Countries with One Border | 0 | - | 4.97 | 181,628 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,521 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,262 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,948 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,006 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,200 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,130 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,684 |
| States of Germany | 0 | - | 4.96 | 150,056 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,016 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,520 |
| Regions of Italy | 0 | - | 4.92 | 74,727 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,814 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,352 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,172 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,159 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,908 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,090 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,406 |
| Champions League Winners | 0 | - | 4.92 | 996,359 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,000 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 105,042 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,361 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 133,775 |
| Pixelated Asia Map | 0 | - | 4.90 | 72,410 |
| Monarchies of Asia | 0 | - | 4.97 | 70,603 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,432 |
| Provinces of Turkey | 0 | - | 4.95 | 201,031 |
| Provinces of China | 0 | - | 4.97 | 200,131 |
| Japanese Prefectures | 0 | - | 4.98 | 134,574 |
| Countries Kim Jong Un Has Been To | 0 | - | 4.95 | 32,213 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,899 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,680 |
| Countries Closest to Taiwan | 0 | - | 4.81 | 92,784 |
| Kazakhstan Country Quiz | 0 | - | 4.85 | 30,887 |
| Bhutan Country Quiz | 0 | - | 4.87 | 24,015 |
| States of India Map Quiz | 0 | - | 4.82 | 26,036 |
| Countries Bordering India | 0 | - | 4.98 | 162,603 |
| Countries Closest to India | 0 | - | 4.97 | 102,207 |
| Countries with the Most Ascents of Mount Everest | 0 | - | 4.95 | 57,776 |
| Nepal Country Quiz | 0 | - | 4.95 | 37,331 |
| African Great Lakes | 0 | - | 4.82 | 65,158 |
| Every African Country Shape | 0 | - | 4.90 | 86,117 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,863 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,176 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,364 |
| Name a Valid African Country | 0 | - | 4.98 | 152,936 |
