| Most-Visited Countries by U.S. Presidents | 0 | - | 4.97 | 179,432 |
| U.S. Presidents by State | 0 | - | 4.29 | 66,149 |
| The John F. Kennedy Presidency | 0 | - | 4.45 | 41,134 |
| United States Map Quiz | 0 | - | 4.98 | 3,920,946 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 219,790 |
| The Richard Nixon Presidency | 0 | - | 4.10 | 20,903 |
| The Jimmy Carter Presidency | 0 | - | 4.39 | 18,124 |
| Random U.S. States on a Map | 0 | - | 4.95 | 502,289 |
| US States Quiz | 0 | - | 5.00 | 14,884,295 |
| Most-Visited U.S. Cities | 0 | - | 4.87 | 73,911 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 63,708 |
| Countries of the Soviet Union | 0 | - | 4.98 | 185,604 |
| Total United States Immigration by Country | 0 | - | 4.89 | 97,468 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 94,567 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.94 | 187,186 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 203,675 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 74,935 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 65,923 |
| Asian Countries Americans Travel to the Most | 0 | - | 4.84 | 55,359 |
| U.S. State Border Crossings | 0 | - | 4.96 | 82,660 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.84 | 34,155 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.97 | 341,768 |
| Top 10 Least Populous U.S. States | 0 | - | 4.93 | 173,848 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 150,991 |
| Most Guessed U.S. Cities | 0 | - | 4.88 | 92,135 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 62,094 |
| US State Capitals Quiz - No Hints | 0 | - | 4.97 | 80,394 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.88 | 44,681 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 223,379 |
| Vietnam War Countries | 0 | - | 4.81 | 86,809 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 67,520 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 89,878 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 125,502 |
| Biggest Mongol Empire Countries | 0 | - | 4.91 | 67,843 |
| Countries that Bordered the USSR | 0 | - | 4.94 | 153,910 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 88,265 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 94,406 |
| Countries that Visit the United States the Most | 0 | - | 4.95 | 79,570 |
| Countries that Beat the United States | 0 | - | 4.92 | 147,055 |
| Europe Map Quiz | 0 | - | 5.00 | 4,326,422 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 90,259 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.96 | 278,372 |
| 10 Longest Rivers in the United States | 0 | - | 4.82 | 35,256 |
| U.S. States with the Longest International Borders | 0 | - | 4.81 | 41,691 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 73,816 |
| Pixelated United States Map | 0 | - | 4.90 | 82,948 |
| US States with an Empty Map | 0 | - | 5.00 | 559,068 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 101,239 |
| Word Scramble - U.S. States | 0 | - | 4.96 | 462,043 |
| U.S. States with the Letter Y | 0 | - | 4.86 | 97,007 |
| 10 Southernmost U.S. States | 0 | - | 4.84 | 100,098 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 72,154 |
| U.S. States with Short Names | 0 | - | 4.87 | 131,109 |
| U.S. States that Start with M | 0 | - | 4.91 | 151,680 |
| U.S. States By Population | 0 | - | 4.90 | 130,865 |
| U.S. States that Start with N | 0 | - | 4.95 | 156,348 |
| U.S. States with Longest Names | 0 | - | 4.85 | 36,442 |
| Louisiana Purchase with a Map | 0 | - | 4.95 | 36,803 |
| 10 Northernmost U.S. States | 0 | - | 4.89 | 74,394 |
| U.S. States or European Countries by Population | 0 | - | 4.98 | 116,727 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 58,724 |
| The Only Remaining U.S. State . . . | 0 | - | 4.94 | 56,629 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 146,237 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 168,381 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.85 | 99,489 |
| Top 10 Least Obese U.S. States | 0 | - | 4.81 | 68,870 |
| Presidential Actors | 0 | - | 4.33 | 17,896 |
| U.S. State Capitals Map Quiz | 0 | - | 4.91 | 126,972 |
| Random State Capital to U.S. State | 0 | - | 4.85 | 75,494 |
| Biggest Roman Empire Countries | 0 | - | 4.88 | 82,560 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 149,036 |
| Countries Closest to United States A-Z | 0 | - | 4.84 | 108,079 |
| Countries Closest to Alaska | 0 | - | 4.92 | 99,848 |
| Countries Closest to Maine | 0 | - | 4.85 | 59,522 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,351,361 |
| Oceania Map Quiz | 0 | - | 4.98 | 572,606 |
| Africa Map Quiz | 0 | - | 5.00 | 1,951,752 |
| Asia Map Quiz | 0 | - | 4.99 | 794,078 |
| Hawaiian Islands Map Quiz | 0 | - | 4.88 | 21,160 |
| U.S. State Shapes Quiz #2 | 0 | - | 4.82 | 91,303 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 52,301 |
| U.S. State Flags | 0 | - | 4.88 | 138,687 |
| Hawaiian Islands | 0 | - | 4.85 | 38,682 |
| Rivers of the United States | 0 | - | 4.92 | 57,554 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 389,820 |
| U.S. States that Border Canada | 0 | - | 4.90 | 166,416 |
| U.S. States that Border Tennessee | 0 | - | 4.84 | 57,977 |
| Name a Valid U.S. State #1 | 0 | - | 4.95 | 186,432 |
| Top 10 Coldest U.S. States | 0 | - | 4.91 | 101,093 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 101,645 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 89,143 |
| Top 10 Most Native American U.S. States | 0 | - | 4.84 | 71,951 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 57,310 |
| U.S. Presidents by Picture | 0 | - | 4.85 | 396,673 |
| Random U.S. Presidents by Picture | 0 | - | 4.37 | 60,505 |
| Important Cities in European History | 0 | - | 4.55 | 110,238 |
| Important Places in U.S. History | 0 | - | 4.23 | 36,494 |
| Africa Capitals Quiz | 0 | - | 4.99 | 641,976 |
| Asia Capitals Quiz | 0 | - | 4.98 | 600,526 |
| Random U.S. State Capitals on a Map | 0 | - | 4.93 | 92,121 |
| Countries That Use the Euro | 0 | - | 4.93 | 64,794 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.91 | 100,311 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 98,973 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 94,147 |
| Countries of Asia in 1900 | 0 | - | 4.49 | 53,773 |
| American Countries on the Pacific Coast | 0 | - | 4.81 | 46,504 |
| The Only European Country ... | 0 | - | 4.93 | 181,132 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 196,404 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.93 | 87,050 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 112,676 |
| Countries of Europe After World War II | 0 | - | 4.98 | 172,194 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 140,764 |
| Random Asian Countries on a Map | 0 | - | 4.96 | 153,045 |
| Random African Countries on a Map | 0 | - | 4.98 | 251,145 |
| Random European Countries on a Map | 0 | - | 4.98 | 261,603 |
| Countries of Africa | 0 | - | 5.00 | 2,194,882 |
| Most-Visited Countries by Popes | 0 | - | 4.63 | 77,027 |
| Vatican City Country Quiz | 0 | - | 4.50 | 39,662 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,288,290 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 41,012 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 80,973 |
| Western Africa Map Quiz | 0 | - | 4.97 | 61,650 |
| Australia Map Quiz | 0 | - | 4.95 | 321,408 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 338,060 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.83 | 39,214 |
| African East Coast | 0 | - | 4.97 | 85,072 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 77,703 |
| Fifty US States in One Minute | 0 | - | 4.57 | 3,269,140 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.43 | 69,589 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.69 | 74,339 |
| Category Elimination - U.S. States #1 | 0 | - | 4.90 | 196,443 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 355,196 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,056,742 |
| Flags of Asia Quiz | 0 | - | 4.99 | 530,083 |
| Canada Geography Trivia | 0 | - | 4.81 | 45,041 |
| Countries of Europe by Population | 0 | - | 4.98 | 129,355 |
| Most Populous Countries by Year | 0 | - | 4.81 | 94,799 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 207,832 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 162,947 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 159,246 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.90 | 81,824 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.92 | 90,124 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 155,800 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 65,142 |
| Biggest European Cities by Century | 0 | - | 4.98 | 119,765 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 110,304 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 69,042 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 76,583 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.91 | 53,981 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.92 | 67,302 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 87,609 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 162,856 |
| Official Cities in the UK | 0 | - | 4.86 | 234,673 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.94 | 94,266 |
| 1M Cities by Proximity - United States | 0 | - | 4.50 | 138,100 |
| Most-Visited Cities in Europe | 0 | - | 4.92 | 57,743 |
| Biggest Cities in a Strip of the United States Map | 0 | - | 4.72 | 36,815 |
| Former Capitals Quiz | 0 | - | 4.81 | 58,322 |
| Europe Capital to Country | 0 | - | 4.99 | 221,820 |
| Asia Capital to Country | 0 | - | 4.96 | 106,493 |
| EU Capitals with No Hints | 0 | - | 4.96 | 126,031 |
| European Capitals by Map | 0 | - | 4.99 | 96,044 |
| African Capitals by Map | 0 | - | 4.99 | 112,437 |
| South America Capitals Quiz | 0 | - | 5.00 | 428,803 |
| North America Capitals Quiz | 0 | - | 4.99 | 188,310 |
| African Capitals - Map Quiz | 0 | - | 4.95 | 52,938 |
| Asian Capitals by Map | 0 | - | 4.98 | 48,070 |
| Top 10 Most Remote European Capitals | 0 | - | 4.85 | 84,902 |
| European Capitals - Map Quiz | 0 | - | 4.98 | 106,446 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.89 | 79,798 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 78,594 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.95 | 73,183 |
| European Coastal Capitals | 0 | - | 4.95 | 77,930 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.90 | 47,107 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 231,532 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.91 | 195,670 |
| Capitals of Mediterranean Countries | 0 | - | 4.96 | 76,443 |
| European Capitals Furthest from the Sea | 0 | - | 4.91 | 67,333 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 52,024 |
| European Capitals Ending in N | 0 | - | 4.92 | 74,435 |
| Countries with American Expatriates | 0 | - | 4.58 | 41,062 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.93 | 1,198,410 |
| Most Mentioned Enemies of the USA | 0 | - | 4.79 | 160,965 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 102,681 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.94 | 188,678 |
| Biggest British Empire Countries | 0 | - | 4.70 | 80,057 |
| Biggest French Empire Countries | 0 | - | 4.46 | 51,604 |
| Countries of the Middle East | 0 | - | 4.96 | 175,583 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 75,717 |
| Asian Countries with the Shortest Names | 0 | - | 4.98 | 122,505 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 101,582 |
| Slavic Countries | 0 | - | 4.96 | 101,166 |
| African Island Countries | 0 | - | 4.96 | 90,417 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 85,855 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 67,088 |
| Monarchies of Europe | 0 | - | 4.88 | 87,648 |
| Monarchies of Asia | 0 | - | 4.95 | 54,467 |
| Straight Shot to Antarctica | 0 | - | 4.90 | 37,738 |
| Countries of North America Quiz | 0 | - | 5.00 | 889,664 |
| Countries of Asia with Two or More Words | 0 | - | 4.95 | 112,052 |
