| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,602 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,159 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,172 |
| North America Map Quiz | 0 | - | 4.98 | 244,501 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,380 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,623 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 93,904 |
| States of Mexico | 0 | - | 4.95 | 173,364 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,161 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 52,976 |
| States of Brazil | 0 | - | 4.98 | 86,395 |
| American Countries on the Pacific Coast | 0 | - | 4.80 | 49,016 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,389 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,582 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,548 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 216,755 |
| Canada Multiple Choice Quiz | 0 | - | 4.53 | 48,902 |
| Canada Geography Trivia | 0 | - | 4.80 | 47,370 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,118 |
| 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 | 68,585 |
| Official European Union Languages | 0 | - | 4.97 | 236,642 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,709 |
| Europe Map Quiz | 0 | - | 5.00 | 4,731,722 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,476 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,378 |
| 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 | 425,234 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,440,549 |
| Asia Map Quiz | 0 | - | 4.99 | 907,125 |
| Countries of Africa | 0 | - | 5.00 | 2,508,193 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,823 |
| African East Coast | 0 | - | 4.96 | 95,060 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,936 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,809 |
| Australia Map Quiz | 0 | - | 4.94 | 342,509 |
| 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 | 39,199 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,472 |
| Word Chain - South America | 0 | - | 4.51 | 23,767 |
| North American Physical Geography | 0 | - | 4.35 | 30,356 |
| United States Map Quiz | 0 | - | 4.98 | 4,142,035 |
| Most Populous Native American Tribes | 0 | - | 4.28 | 12,406 |
| Top U.S. Cash Crops | 0 | - | 4.39 | 62,091 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.21 | 52,521 |
| Largest Asian-American Ethnic Groups | 0 | - | 4.11 | 40,796 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,168 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,214 |
| Countries That Use the Euro | 0 | - | 4.96 | 103,020 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,329 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,544 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,582 |
| The Only European Country ... | 0 | - | 4.91 | 213,878 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,561 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,570 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,483 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,375,976 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,437 |
| Flags of Africa Quiz | 0 | - | 5.00 | 463,464 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,639 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,587 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,286 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,509 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,130 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,481 |
| African Island Countries | 0 | - | 4.96 | 100,800 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,673 |
| Australian States and Territories | 0 | - | 4.96 | 140,917 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,022 |
| Australia True or False | 0 | - | 4.87 | 56,510 |
| Flags of North and South America | 0 | - | 4.99 | 367,324 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,248 |
| South America Map Quiz | 0 | - | 5.00 | 1,541,301 |
| South American Physical Geography | 0 | - | 4.58 | 18,271 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,011,820 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,963 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 636,003 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,500 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,242 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,226,893 |
| Celtic Nations | 0 | - | 4.69 | 46,812 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,319,902 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,723 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,297 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,365 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,479 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,859 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,867 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,944 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,471 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,275 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,210 |
| Slavic Countries | 0 | - | 4.96 | 110,868 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,050 |
| Counties of England | 0 | - | 4.97 | 789,287 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,977 |
| Flags of Asia Quiz | 0 | - | 4.99 | 605,658 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 109,354 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,776 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,429 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,264 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,724 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,502 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 70,697 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 228,783 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.93 | 49,165 |
| Countries of the Middle East | 0 | - | 4.96 | 198,945 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,252 |
| States of India | 0 | - | 4.94 | 190,116 |
| 10 African Countries with the Most Tourists | 0 | - | 4.39 | 60,162 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,007 |
| African Diaspora - Top 10 Countries | 0 | - | 4.92 | 72,257 |
| The Only African Country ... | 0 | - | 4.99 | 128,371 |
| African Countries by a Single Clue | 0 | - | 4.92 | 67,782 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,078 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.42 | 319,367 |
| Countries Closest to Africa | 0 | - | 4.96 | 156,118 |
| Flags of Oceania | 0 | - | 5.00 | 255,244 |
| All First-Level Subdivisions of Oceania on a Map | 0 | - | 4.97 | 26,924 |
| Australia Cities Map Quiz | 0 | - | 4.83 | 144,439 |
| 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 | 120,767 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,352 |
| 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 | 899,831 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 56,984 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 62,999 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,962 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,347 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,880 |
| The U.S. Pledge of Allegiance | 0 | - | 3.98 | 18,298 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,082 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,501 |
| US States Quiz | 0 | - | 5.00 | 16,702,917 |
| U.S. Geography - Multiple Choice | 0 | - | 4.41 | 24,663 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 104,375 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,339 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,046 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,407 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,877 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,226 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,151 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,828 |
| Monarchies of Europe | 0 | - | 4.90 | 97,333 |
| European Countries with One Border | 0 | - | 4.97 | 181,644 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,537 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,277 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,962 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,023 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,216 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,157 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,699 |
| States of Germany | 0 | - | 4.96 | 150,091 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,026 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,527 |
| Regions of Italy | 0 | - | 4.92 | 74,735 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,824 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,365 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,201 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,193 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,936 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,108 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,434 |
| Champions League Winners | 0 | - | 4.92 | 996,463 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,004 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 105,059 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,369 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 133,803 |
| Pixelated Asia Map | 0 | - | 4.90 | 72,420 |
| Monarchies of Asia | 0 | - | 4.97 | 70,611 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,434 |
| Provinces of Turkey | 0 | - | 4.95 | 201,069 |
| Provinces of China | 0 | - | 4.97 | 200,168 |
| Japanese Prefectures | 0 | - | 4.98 | 134,620 |
| Countries Kim Jong Un Has Been To | 0 | - | 4.95 | 32,220 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,909 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,690 |
| Countries Closest to Taiwan | 0 | - | 4.81 | 92,792 |
| Kazakhstan Country Quiz | 0 | - | 4.85 | 31,636 |
| Bhutan Country Quiz | 0 | - | 4.87 | 24,017 |
| States of India Map Quiz | 0 | - | 4.82 | 26,039 |
| Countries Bordering India | 0 | - | 4.98 | 162,607 |
| Countries Closest to India | 0 | - | 4.97 | 102,214 |
| Countries with the Most Ascents of Mount Everest | 0 | - | 4.95 | 57,779 |
| Nepal Country Quiz | 0 | - | 4.95 | 37,337 |
| African Great Lakes | 0 | - | 4.82 | 65,174 |
| Every African Country Shape | 0 | - | 4.90 | 86,131 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,870 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,184 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,369 |
| Name a Valid African Country | 0 | - | 4.98 | 152,951 |
