| Paraguay... or Uruguay? | 0 | - | 4.55 | 26,594 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,109 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,075 |
| North America Map Quiz | 0 | - | 4.98 | 243,999 |
| Third Most Common Language by U.S. State | 0 | - | 4.89 | 113,342 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 54,540 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 93,820 |
| States of Mexico | 0 | - | 4.95 | 173,025 |
| Countries of South America with an Empty Map | 0 | - | 4.94 | 104,046 |
| All First-Level Subdivisions of South America on a Map | 0 | - | 4.92 | 52,769 |
| States of Brazil | 0 | - | 4.98 | 86,220 |
| American Countries on the Pacific Coast | 0 | - | 4.80 | 48,993 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,012 |
| Haiti... or Dominican Republic? | 0 | - | 4.70 | 40,561 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,339 |
| Most-Spoken Languages of the United States | 0 | - | 4.52 | 216,303 |
| Canada Multiple Choice Quiz | 0 | - | 4.53 | 48,846 |
| Canada Geography Trivia | 0 | - | 4.80 | 47,341 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 276,927 |
| Australian Capitals | 0 | - | 4.92 | 62,585 |
| Name a Valid Answer - United States #1 | 0 | - | 4.63 | 93,379 |
| U.S. Highway Signs By State | 0 | - | 4.46 | 15,376 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,522 |
| Official European Union Languages | 0 | - | 4.97 | 236,349 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,602 |
| Europe Map Quiz | 0 | - | 5.00 | 4,727,442 |
| Africa Map Quiz | 0 | - | 5.00 | 2,102,818 |
| Oceania Map Quiz | 0 | - | 4.98 | 634,475 |
| Islands of the Galápagos | 0 | - | 4.54 | 4,754 |
| Native American Tribes in the US | 0 | - | 4.70 | 25,251 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,858 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,437,788 |
| Asia Map Quiz | 0 | - | 4.99 | 905,797 |
| Countries of Africa | 0 | - | 5.00 | 2,504,440 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,716 |
| African East Coast | 0 | - | 4.96 | 94,930 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,797 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,722 |
| Australia Map Quiz | 0 | - | 4.94 | 342,230 |
| Largest Land Animals of the Americas | 0 | - | 4.38 | 20,189 |
| New World Crops | 0 | - | 4.33 | 23,494 |
| Hispanic Last Names in the U.S. | 0 | - | 4.30 | 54,602 |
| History of Mexico | 0 | - | 4.58 | 15,218 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,170 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,454 |
| Word Chain - South America | 0 | - | 4.51 | 23,755 |
| North American Physical Geography | 0 | - | 4.35 | 30,351 |
| United States Map Quiz | 0 | - | 4.98 | 4,139,694 |
| Most Populous Native American Tribes | 0 | - | 4.28 | 12,402 |
| Top U.S. Cash Crops | 0 | - | 4.39 | 62,060 |
| Things Named For People #2 - U.S. Centric | 0 | - | 4.21 | 52,508 |
| Largest Asian-American Ethnic Groups | 0 | - | 4.11 | 40,769 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 209,836 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,157 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,737 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,068 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,483 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,337 |
| The Only European Country ... | 0 | - | 4.91 | 213,501 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,323 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,529 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,310 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,374,758 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,251 |
| Flags of Africa Quiz | 0 | - | 5.00 | 462,250 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,479 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,466 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,151 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,423 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 151,922 |
| Top African Languages on a Map | 0 | - | 4.92 | 72,258 |
| African Island Countries | 0 | - | 4.96 | 100,663 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,452 |
| Australian States and Territories | 0 | - | 4.95 | 140,553 |
| Australian Immigration by Country | 0 | - | 4.81 | 76,988 |
| Australia True or False | 0 | - | 4.87 | 56,467 |
| Flags of North and South America | 0 | - | 4.99 | 365,565 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 127,939 |
| South America Map Quiz | 0 | - | 5.00 | 1,540,291 |
| South American Physical Geography | 0 | - | 4.58 | 18,263 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,010,467 |
| Canada Provinces and Territories | 0 | - | 5.00 | 337,306 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 635,325 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,455 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,225 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,224,154 |
| Celtic Nations | 0 | - | 4.69 | 46,796 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,318,596 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,582 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,196 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,041 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,404 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,780 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,566 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,541 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,175 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,144 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,070 |
| Slavic Countries | 0 | - | 4.96 | 110,770 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,010 |
| Counties of England | 0 | - | 4.97 | 788,358 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,167 |
| Flags of Asia Quiz | 0 | - | 4.99 | 604,529 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 109,266 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,675 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,322 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,132 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,589 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,363 |
| Top Asian Languages on a Map | 0 | - | 4.94 | 70,590 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 228,603 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.93 | 49,019 |
| Countries of the Middle East | 0 | - | 4.96 | 198,708 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,216 |
| States of India | 0 | - | 4.94 | 189,689 |
| 10 African Countries with the Most Tourists | 0 | - | 4.38 | 60,099 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 48,971 |
| African Diaspora - Top 10 Countries | 0 | - | 4.92 | 72,201 |
| The Only African Country ... | 0 | - | 4.99 | 128,263 |
| African Countries by a Single Clue | 0 | - | 4.92 | 67,734 |
| Pixelated Africa Map | 0 | - | 4.98 | 98,960 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.42 | 319,194 |
| Countries Closest to Africa | 0 | - | 4.96 | 156,017 |
| Flags of Oceania | 0 | - | 5.00 | 254,635 |
| All First-Level Subdivisions of Oceania on a Map | 0 | - | 4.97 | 26,877 |
| Australia Cities Map Quiz | 0 | - | 4.83 | 144,303 |
| Australia Country Quiz | 0 | - | 4.43 | 69,235 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,015 |
| Regions of New Zealand | 0 | - | 4.85 | 28,100 |
| The Only American Country ... | 0 | - | 4.92 | 120,663 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,262 |
| Places Mentioned in the Song "Kokomo" | 0 | - | 4.44 | 16,955 |
| Famous People from South America | 0 | - | 4.15 | 21,769 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,487 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 56,855 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 62,789 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,841 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,160 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,756 |
| The U.S. Pledge of Allegiance | 0 | - | 3.98 | 18,278 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 72,967 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,434 |
| US States Quiz | 0 | - | 5.00 | 16,679,529 |
| U.S. Geography - Multiple Choice | 0 | - | 4.41 | 24,645 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 104,296 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,265 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 94,959 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,217 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,656 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,114 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,097 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,650 |
| Monarchies of Europe | 0 | - | 4.90 | 97,210 |
| European Countries with One Border | 0 | - | 4.97 | 181,458 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 177,971 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,125 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,774 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,609 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,099 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,003 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,562 |
| States of Germany | 0 | - | 4.96 | 149,783 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,910 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,483 |
| Regions of Italy | 0 | - | 4.92 | 74,599 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,736 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,137 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,053 |
| UK Cities Map Quiz | 0 | - | 4.95 | 461,896 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,840 |
| Counties of England Map Quiz | 0 | - | 4.97 | 305,953 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,392 |
| Champions League Winners | 0 | - | 4.92 | 995,092 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 65,929 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 104,927 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,250 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 133,543 |
| Pixelated Asia Map | 0 | - | 4.90 | 72,290 |
| Monarchies of Asia | 0 | - | 4.97 | 70,540 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,379 |
| Provinces of Turkey | 0 | - | 4.95 | 199,922 |
| Provinces of China | 0 | - | 4.97 | 199,709 |
| Japanese Prefectures | 0 | - | 4.98 | 134,285 |
| Countries Kim Jong Un Has Been To | 0 | - | 4.95 | 32,124 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,710 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,606 |
| Countries Closest to Taiwan | 0 | - | 4.81 | 92,721 |
| Kazakhstan Country Quiz | 0 | - | 4.83 | 30,318 |
| Bhutan Country Quiz | 0 | - | 4.87 | 23,992 |
| States of India Map Quiz | 0 | - | 4.82 | 25,986 |
| Countries Bordering India | 0 | - | 4.98 | 162,537 |
| Countries Closest to India | 0 | - | 4.96 | 102,146 |
| Countries with the Most Ascents of Mount Everest | 0 | - | 4.95 | 57,708 |
| Nepal Country Quiz | 0 | - | 4.95 | 37,285 |
| African Great Lakes | 0 | - | 4.82 | 65,043 |
| Every African Country Shape | 0 | - | 4.90 | 85,862 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,784 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,128 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,293 |
| Name a Valid African Country | 0 | - | 4.98 | 152,815 |
