| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,657 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,608 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,231 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 213,538 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,182 |
| Australian Capitals | 0 | - | 4.92 | 62,724 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,143 |
| Official European Union Languages | 0 | - | 4.97 | 238,544 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,876 |
| Europe Map Quiz | 0 | - | 5.00 | 4,763,553 |
| Years in History #1 - Multiple Choice | 0 | - | 4.85 | 70,310 |
| Multiple Choice Geography #3 | 0 | - | 4.81 | 74,280 |
| Africa Map Quiz | 0 | - | 5.00 | 2,118,156 |
| Oceania Map Quiz | 0 | - | 4.98 | 642,472 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,259 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,448,318 |
| Asia Map Quiz | 0 | - | 4.99 | 916,990 |
| Countries of Africa | 0 | - | 5.00 | 2,537,552 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,842 |
| African East Coast | 0 | - | 4.96 | 96,079 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,895 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,720 |
| Australia Map Quiz | 0 | - | 4.95 | 344,647 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,296 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,066 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,512 |
| Celtic Nations | 0 | - | 4.69 | 46,951 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,992 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,282 |
| The Only European Country ... | 0 | - | 4.91 | 216,685 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,165 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,838 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 98,993 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,383,076 |
| Historical Events - AD or BC? | 0 | - | 4.70 | 57,601 |
| Science Multiple Choice #1 | 0 | - | 4.53 | 86,569 |
| Northern Hemisphere... or Southern Hemisphere? | 0 | - | 4.95 | 110,681 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,979 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,008 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,592 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 161,259 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,275 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,542 |
| Top African Languages on a Map | 0 | - | 4.92 | 74,085 |
| African Island Countries | 0 | - | 4.96 | 101,646 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,436 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 33,283 |
| Australian States and Territories | 0 | - | 4.96 | 141,988 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,292 |
| Australia True or False | 0 | - | 4.87 | 56,863 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,617 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 144,238 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 129,790 |
| North America Map Quiz | 0 | - | 4.98 | 248,577 |
| Third Most Common Language by U.S. State | 0 | - | 4.87 | 113,737 |
| United States Map Quiz | 0 | - | 4.98 | 4,158,745 |
| Most Spoken Languages in Canada | 0 | - | 4.91 | 55,169 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,887 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,387 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,685 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,220 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,749 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,163 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,384 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,592 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 171,935 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,253 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,304 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,204 |
| Slavic Countries | 0 | - | 4.96 | 111,672 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,363 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,016 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 110,247 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 153,754 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,169 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 108,008 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 126,914 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 107,523 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,446 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,397 |
| All First-Level Subdivisions of Asia on a Map | 0 | - | 4.91 | 49,949 |
| Countries of the Middle East | 0 | - | 4.96 | 201,200 |
| Countries where Arabic is an Official Language | 0 | - | 4.85 | 72,525 |
| Flags of Africa Quiz | 0 | - | 5.00 | 471,449 |
| 10 African Countries with the Most Tourists | 0 | - | 4.39 | 60,645 |
| Australia Country Quiz | 0 | - | 4.43 | 69,596 |
| Flags of North and South America | 0 | - | 4.99 | 373,160 |
| South America Map Quiz | 0 | - | 5.00 | 1,549,952 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,023,409 |
| Canada Provinces and Territories | 0 | - | 5.00 | 342,628 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 640,505 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,244,421 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,328,845 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,499 |
| Counties of England | 0 | - | 4.97 | 796,946 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 356,083 |
| Flags of Asia Quiz | 0 | - | 4.99 | 613,715 |
| Literature Multiple Choice #1 | 0 | - | 4.51 | 40,886 |
| Drink It, Play It, or Spend It | 0 | - | 4.44 | 28,415 |
| Which Came First? | 0 | - | 4.37 | 74,805 |
| Literature Multiple Choice #2 | 0 | - | 4.45 | 34,567 |
| Diseases: Virus... or Bacteria? | 0 | - | 4.61 | 38,709 |
| Multiple Choice Animal Quiz #1 | 0 | - | 4.50 | 56,191 |
| Science Multiple Choice #2 | 0 | - | 4.37 | 36,589 |
| Geography True or False #2 | 0 | - | 4.41 | 87,859 |
| Geography True or False #3 | 0 | - | 4.42 | 78,091 |
| Geography True or False #4 | 0 | - | 4.49 | 82,073 |
| Geography True or False #1 | 0 | - | 4.48 | 123,030 |
| History Multiple Choice #1 | 0 | - | 4.41 | 81,970 |
| Years in History #2 - Multiple Choice | 0 | - | 4.42 | 41,660 |
| History Multiple Choice #2 | 0 | - | 4.43 | 50,049 |
| History Multiple Choice #3 | 0 | - | 4.45 | 48,742 |
| History Multiple Choice #5 | 0 | - | 4.49 | 32,462 |
| Multiple Choice Geography #1 | 0 | - | 4.77 | 136,387 |
| Multiple Choice Geography #2 | 0 | - | 4.46 | 89,770 |
| Movie Quotes Multiple Choice #1 | 0 | - | 4.46 | 33,744 |
| States of India | 0 | - | 4.95 | 193,381 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,339 |
| African Diaspora - Top 10 Countries | 0 | - | 4.93 | 72,786 |
| The Only African Country ... | 0 | - | 4.99 | 129,108 |
| African Countries by a Single Clue | 0 | - | 4.92 | 68,132 |
| Pixelated Africa Map | 0 | - | 4.98 | 99,872 |
| Countries of Africa - One Minute Sprint | 0 | - | 4.43 | 322,330 |
| Countries Closest to Africa | 0 | - | 4.96 | 157,216 |
| African Countries That Have Been to the FIFA World Cup | 0 | - | 4.88 | 57,417 |
| Flags of Oceania | 0 | - | 5.00 | 259,493 |
| All First-Level Subdivisions of Oceania on a Map | 0 | - | 4.97 | 27,344 |
| Australia Cities Map Quiz | 0 | - | 4.82 | 145,426 |
| Australia... or New Zealand? | 0 | - | 4.83 | 61,576 |
| Regions of New Zealand | 0 | - | 4.85 | 28,518 |
| The Only American Country ... | 0 | - | 4.92 | 121,624 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,131 |
| Uruguay Country Quiz | 0 | - | 4.84 | 31,586 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 902,374 |
| North American Capitals - Map Quiz | 0 | - | 4.87 | 58,005 |
| Countries of North America with an Empty Map | 0 | - | 4.99 | 94,680 |
| All First-Level Subdivisions of North America on a Map | 0 | - | 4.97 | 64,185 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,485 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,482 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,480 |
| Cities and Towns of Massachusetts | 0 | - | 4.92 | 74,079 |
| Countries Larger Than Texas but With Fewer People | 0 | - | 4.92 | 39,947 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 105,095 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,871 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,559 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,350 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,150 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,775 |
| Monarchies of Europe | 0 | - | 4.90 | 98,165 |
| European Countries with One Border | 0 | - | 4.97 | 182,800 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,599 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,624 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,416 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 81,985 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,032 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,000 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,297 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,912 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,457 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,835 |
| States of Germany | 0 | - | 4.96 | 152,639 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,050 |
| Regions of Italy | 0 | - | 4.92 | 75,910 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,181 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,964 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,219 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,601 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,011 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,664 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,704 |
| Champions League Winners | 0 | - | 4.92 | 1,006,940 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,528 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 106,016 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,309 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 135,853 |
| Pixelated Asia Map | 0 | - | 4.90 | 73,221 |
| Monarchies of Asia | 0 | - | 4.97 | 71,095 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,899 |
| Provinces of Turkey | 0 | - | 4.95 | 204,226 |
| Provinces of China | 0 | - | 4.97 | 204,559 |
| Japanese Prefectures | 0 | - | 4.98 | 136,978 |
| Countries Kim Jong Un Has Been To | 0 | - | 4.95 | 32,852 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,875 |
| States of India Map Quiz | 0 | - | 4.83 | 26,528 |
| Countries with the Most Ascents of Mount Everest | 0 | - | 4.95 | 58,240 |
| Nepal Country Quiz | 0 | - | 4.95 | 37,731 |
| African Great Lakes | 0 | - | 4.82 | 66,261 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,615 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,619 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,369 |
| Name a Valid African Country | 0 | - | 4.98 | 154,099 |
| Kenya Country Quiz | 0 | - | 4.86 | 34,800 |
| Tanzania Country Quiz | 0 | - | 4.90 | 33,077 |
| Morocco Country Quiz | 0 | - | 4.81 | 46,500 |
| D.R. Congo Country Quiz | 0 | - | 4.87 | 39,368 |
| Palau Country Quiz | 0 | - | 4.90 | 23,018 |
| Most Visited Countries by Australians | 0 | - | 4.95 | 90,584 |
| Countries that Visit Australia the Most | 0 | - | 4.92 | 69,114 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,958 |
| Tuvalu Country Quiz | 0 | - | 4.86 | 21,450 |
