| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 128,762 |
| Vietnam War Countries | 0 | - | 4.83 | 93,719 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,631 |
| Countries of Europe After World War II | 0 | - | 4.99 | 186,930 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 155,547 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,347 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 103,920 |
| United States Map Quiz | 0 | - | 4.98 | 4,144,337 |
| Random U.S. States on a Map | 0 | - | 4.96 | 622,447 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 142,801 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,855 |
| The American Revolution | 0 | - | 4.52 | 54,098 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 61,785 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,319 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 60,657 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 74,983 |
| US States Quiz | 0 | - | 5.00 | 16,731,122 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,043 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,220 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 218,872 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 132,774 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,547 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 92,624 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 80,959 |
| Countries of the Soviet Union | 0 | - | 4.98 | 193,989 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,789 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,147 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,425 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,960 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 241,410 |
| Arms Exports - United States | 0 | - | 4.70 | 56,964 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,308 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 328,769 |
| Biggest Axis-Controlled Cities | 0 | - | 4.43 | 48,657 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,632 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,344 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,791 |
| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 192,722 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,665 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,987 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,326 |
| Europe Map Quiz | 0 | - | 5.00 | 4,736,898 |
| Pixelated United States Map | 0 | - | 4.89 | 93,626 |
| US States with an Empty Map | 0 | - | 5.00 | 619,768 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,913 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,527 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,580 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,873 |
| U.S. States that Start with M | 0 | - | 4.93 | 186,127 |
| U.S. States By Population | 0 | - | 4.92 | 152,516 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,573 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,978 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 81,981 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,829 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 65,000 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,212 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,170 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 124,596 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,135 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 85,742 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,603 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 172,981 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 105,168 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.84 | 72,203 |
| Random Cities Near Chicago on a Map | 0 | - | 4.52 | 34,255 |
| Cities by Skyline Silhouette - Map Quiz | 0 | - | 4.93 | 123,118 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,657 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,930 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,575 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 102,898 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 81,977 |
| Countries of the German Empire | 0 | - | 4.51 | 37,710 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,580 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 164,654 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 94,820 |
| Countries Closest to Alaska | 0 | - | 4.93 | 123,489 |
| Countries Closest to Maine | 0 | - | 4.84 | 66,554 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.92 | 79,659 |
| Biggest Trading Partners - China | 0 | - | 4.95 | 74,747 |
| Biggest Trading Partners - Germany | 0 | - | 4.97 | 70,888 |
| Biggest Trading Partners - Spain | 0 | - | 4.92 | 53,553 |
| Biggest Trading Partners – Australia | 0 | - | 4.93 | 61,045 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,788 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,442,173 |
| Oceania Map Quiz | 0 | - | 4.98 | 636,440 |
| Africa Map Quiz | 0 | - | 5.00 | 2,106,541 |
| Asia Map Quiz | 0 | - | 4.99 | 908,390 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,191 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 48,723 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,855 |
| Rivers of the United States | 0 | - | 4.93 | 65,622 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,708 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,026 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 502,728 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 94,943 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,746 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 207,053 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 132,156 |
| U.S. Senators by State | 0 | - | 4.45 | 39,787 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,019 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,838 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 93,655 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,239 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,610 |
| Cities in U.S. History #1 | 0 | - | 4.31 | 45,064 |
| Africa Capitals Quiz | 0 | - | 4.99 | 731,657 |
| Asia Capitals Quiz | 0 | - | 4.98 | 687,191 |
| Random State Capital to U.S. State | 0 | - | 4.83 | 88,370 |
| US States and State Capitals | 0 | - | 4.99 | 159,091 |
| New York City A-Z | 0 | - | 4.18 | 32,212 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,376 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,959 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,856 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,453 |
| The Only European Country ... | 0 | - | 4.91 | 214,346 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,512 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,869 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,353 |
| Random American Countries on a Map | 0 | - | 4.96 | 98,779 |
| Countries of Africa | 0 | - | 5.00 | 2,512,777 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,569 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,377,321 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,979 |
| South and Central Asia Map Quiz | 0 | - | 4.93 | 97,681 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,086 |
| Australia Map Quiz | 0 | - | 4.94 | 342,794 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,679 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 57,743 |
| U.S. State Flags | 0 | - | 4.89 | 167,839 |
| Hawaiian Islands | 0 | - | 4.83 | 42,482 |
| U.S. States that Border Canada | 0 | - | 4.91 | 182,920 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,132 |
| African East Coast | 0 | - | 4.96 | 95,213 |
| States in a Tank of the U.S. Map | 0 | - | 4.47 | 31,078 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,515 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,229,725 |
| Flags of Asia Quiz | 0 | - | 4.99 | 606,873 |
| Countries of Europe by Population | 0 | - | 4.98 | 178,505 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,481 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,481 |
| Biggest European Cities by Century | 0 | - | 4.99 | 144,555 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,463 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,390 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,746 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 66,657 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,920 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,362 |
| Cities in European History #1 | 0 | - | 4.63 | 133,325 |
| Southernmost Major Cities in the U.S. | 0 | - | 4.43 | 36,485 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 109,523 |
| Most-Visited Cities in Europe | 0 | - | 4.82 | 74,103 |
| Former Capitals | 0 | - | 4.88 | 71,203 |
| Europe Capital to Country | 0 | - | 4.99 | 248,299 |
| Asia Capital to Country | 0 | - | 4.96 | 125,907 |
| EU Capitals with No Hints | 0 | - | 4.96 | 144,752 |
| European Capitals by Map | 0 | - | 4.99 | 136,910 |
| African Capitals by Map | 0 | - | 4.99 | 132,425 |
| South America Capitals Quiz | 0 | - | 5.00 | 477,948 |
| Asian Capitals by Map | 0 | - | 4.98 | 61,422 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,395 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 83,775 |
| European Coastal Capitals | 0 | - | 4.95 | 89,920 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,255 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 267,501 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 222,241 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,480 |
| Random U.S. State Capitals on a Map | 0 | - | 4.92 | 103,405 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,321,338 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 174,721 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,753 |
| Countries of Asia in 1900 | 0 | - | 4.50 | 57,673 |
| Countries of the Middle East | 0 | - | 4.96 | 199,271 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,440 |
| Slavic Countries | 0 | - | 4.96 | 111,005 |
| African Island Countries | 0 | - | 4.96 | 100,920 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 42,569 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 124,914 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,013,977 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 125,953 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 106,654 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 152,361 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,848 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,873 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,940 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,226 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,288 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,455 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,694 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,440 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,533 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,396 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,623 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 636,695 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 900,177 |
| South America Map Quiz | 0 | - | 5.00 | 1,542,364 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 128,432 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,594 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,339 |
| North America Map Quiz | 0 | - | 4.98 | 245,202 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 98,514 |
