| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,602 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,165 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,188 |
| North America Map Quiz | 0 | - | 4.98 | 244,554 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,383 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,637 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 93,914 |
| States of Mexico | 0 | - | 4.95 | 173,402 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,177 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 53,008 |
| States of Brazil | 0 | - | 4.98 | 86,423 |
| American Countries on the Pacific Coast | 0 | - | 4.80 | 49,020 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,456 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,587 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,579 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 216,806 |
| Canada Multiple Choice Quiz | 0 | - | 4.53 | 48,913 |
| Canada Geography Trivia | 0 | - | 4.80 | 47,375 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,147 |
| Australian Capitals | 0 | - | 4.92 | 62,594 |
| Name a Valid Answer - United States #1 | 0 | - | 4.61 | 93,459 |
| U.S. Highway Signs By State | 0 | - | 4.46 | 15,390 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,597 |
| Official European Union Languages | 0 | - | 4.97 | 236,836 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,720 |
| Europe Map Quiz | 0 | - | 5.00 | 4,732,344 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,742 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,506 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,755 |
| Native American Tribes in the US | 0 | - | 4.72 | 25,264 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,305 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,440,907 |
| Asia Map Quiz | 0 | - | 4.99 | 907,302 |
| Countries of Africa | 0 | - | 5.00 | 2,508,745 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,838 |
| African East Coast | 0 | - | 4.96 | 95,081 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,969 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,821 |
| Australia Map Quiz | 0 | - | 4.94 | 342,557 |
| Largest Land Animals of the Americas | 0 | - | 4.38 | 20,194 |
| New World Crops | 0 | - | 4.33 | 23,504 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,619 |
| History of Mexico | 0 | - | 4.58 | 15,232 |
| South American Geography Quiz #2 | 0 | - | 4.62 | 39,201 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,475 |
| Word Chain - South America | 0 | - | 4.51 | 23,768 |
| North American Physical Geography | 0 | - | 4.35 | 30,357 |
| United States Map Quiz | 0 | - | 4.98 | 4,142,280 |
| Most Populous Native American Tribes | 0 | - | 4.28 | 12,406 |
| Top U.S. Cash Crops | 0 | - | 4.39 | 62,093 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.21 | 52,523 |
| Largest Asian-American Ethnic Groups | 0 | - | 4.11 | 40,801 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,203 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,226 |
| Countries That Use the Euro | 0 | - | 4.96 | 103,066 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,384 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,551 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,627 |
| The Only European Country ... | 0 | - | 4.91 | 213,938 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,606 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,575 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,506 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,376,283 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,444 |
| Flags of Africa Quiz | 0 | - | 5.00 | 463,633 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,659 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,602 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,305 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,516 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,166 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,503 |
| African Island Countries | 0 | - | 4.96 | 100,817 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,712 |
| Australian States and Territories | 0 | - | 4.96 | 140,930 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,024 |
| Australia True or False | 0 | - | 4.87 | 56,518 |
| Flags of North and South America | 0 | - | 4.99 | 367,520 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,268 |
| South America Map Quiz | 0 | - | 5.00 | 1,541,405 |
| South American Physical Geography | 0 | - | 4.58 | 18,272 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,012,075 |
| Canada Provinces and Territories | 0 | - | 5.00 | 338,039 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 636,149 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,509 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,244 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,227,272 |
| Celtic Nations | 0 | - | 4.69 | 46,818 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,320,082 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,733 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,316 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,414 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,492 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,875 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,901 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,001 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,527 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,292 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,220 |
| Slavic Countries | 0 | - | 4.96 | 110,883 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,056 |
| Counties of England | 0 | - | 4.97 | 789,460 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,116 |
| Flags of Asia Quiz | 0 | - | 4.99 | 605,821 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 109,368 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,801 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,444 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,284 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,755 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,518 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 70,715 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 228,815 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.93 | 49,183 |
| Countries of the Middle East | 0 | - | 4.96 | 198,993 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,254 |
| States of India | 0 | - | 4.94 | 190,268 |
| 10 African Countries with the Most Tourists | 0 | - | 4.39 | 60,174 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,008 |
| African Diaspora - Top 10 Countries | 0 | - | 4.92 | 72,262 |
| The Only African Country ... | 0 | - | 4.99 | 128,388 |
| African Countries by a Single Clue | 0 | - | 4.92 | 67,787 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,094 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.42 | 319,385 |
| Countries Closest to Africa | 0 | - | 4.96 | 156,132 |
| Flags of Oceania | 0 | - | 5.00 | 255,330 |
| All First-Level Subdivisions of Oceania on a Map | 0 | - | 4.97 | 26,931 |
| Australia Cities Map Quiz | 0 | - | 4.83 | 144,446 |
| Australia Country Quiz | 0 | - | 4.43 | 69,291 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,066 |
| Regions of New Zealand | 0 | - | 4.85 | 28,166 |
| The Only American Country ... | 0 | - | 4.92 | 120,782 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,366 |
| Places Mentioned in the Song "Kokomo" | 0 | - | 4.44 | 16,968 |
| Famous People from South America | 0 | - | 4.15 | 21,790 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,885 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 57,004 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 63,019 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,971 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,366 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,891 |
| The U.S. Pledge of Allegiance | 0 | - | 3.98 | 18,300 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 73,092 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,511 |
| US States Quiz | 0 | - | 5.00 | 16,706,366 |
| U.S. Geography - Multiple Choice | 0 | - | 4.41 | 24,665 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 104,383 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,352 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,061 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,428 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,911 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,249 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,160 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,848 |
| Monarchies of Europe | 0 | - | 4.90 | 97,349 |
| European Countries with One Border | 0 | - | 4.97 | 181,664 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,567 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,292 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,988 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,070 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,229 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,210 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,749 |
| States of Germany | 0 | - | 4.96 | 150,149 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,055 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,541 |
| Regions of Italy | 0 | - | 4.92 | 74,760 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,846 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,398 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,219 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,241 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,999 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,148 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,491 |
| Champions League Winners | 0 | - | 4.92 | 996,732 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,007 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 105,077 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,397 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 133,833 |
| Pixelated Asia Map | 0 | - | 4.90 | 72,443 |
| Monarchies of Asia | 0 | - | 4.97 | 70,613 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,440 |
| Provinces of Turkey | 0 | - | 4.95 | 201,179 |
| Provinces of China | 0 | - | 4.97 | 200,232 |
| Japanese Prefectures | 0 | - | 4.98 | 134,668 |
| Countries Kim Jong Un Has Been To | 0 | - | 4.95 | 32,236 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,933 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,708 |
| Countries Closest to Taiwan | 0 | - | 4.81 | 92,806 |
| Kazakhstan Country Quiz | 0 | - | 4.85 | 32,799 |
| Bhutan Country Quiz | 0 | - | 4.87 | 24,027 |
| States of India Map Quiz | 0 | - | 4.82 | 26,053 |
| Countries Bordering India | 0 | - | 4.98 | 162,623 |
| Countries Closest to India | 0 | - | 4.97 | 102,220 |
| Countries with the Most Ascents of Mount Everest | 0 | - | 4.95 | 57,790 |
| Nepal Country Quiz | 0 | - | 4.95 | 37,347 |
| African Great Lakes | 0 | - | 4.82 | 65,209 |
| Every African Country Shape | 0 | - | 4.90 | 86,150 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,878 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,189 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,383 |
| Name a Valid African Country | 0 | - | 4.98 | 152,974 |
