| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 194,211 |
| U.S. Presidents by State | 0 | - | 4.34 | 68,800 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,721 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,881 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,382 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,804 |
| US States Quiz | 0 | - | 5.00 | 16,961,700 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,765 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,255 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,200 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 94,620 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 82,335 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,157 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,584 |
| Vietnam War Countries | 0 | - | 4.82 | 94,496 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,775 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,959 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,573 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,266 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,238 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,030 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,335 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 334,543 |
| Pixelated United States Map | 0 | - | 4.88 | 94,652 |
| US States with an Empty Map | 0 | - | 5.00 | 627,480 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,798 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 112,016 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,032 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,678 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,034 |
| U.S. States By Population | 0 | - | 4.92 | 153,963 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,992 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,759 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,950 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,447 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,958 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 160,509 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,077 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,564 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,759 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,559 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,403 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 177,384 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 106,742 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 73,204 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,498 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 149,589 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,252 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,028 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,430 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,971 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 166,245 |
| Countries Bordering China Since 1914 | 0 | - | 4.92 | 95,742 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,905 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,458 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,325 |
| Europe Map Quiz | 0 | - | 5.00 | 4,780,568 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,285 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,947 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,330 |
| Rivers of the United States | 0 | - | 4.93 | 66,538 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,920 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 509,119 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,782 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,116 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 210,185 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,893 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,686 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,305 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 94,088 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,650 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,138 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 22,073 |
| Random State Capital to U.S. State | 0 | - | 4.85 | 89,617 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,781 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 102,191 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 162,061 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,544 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,061 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,864 |
| Africa Map Quiz | 0 | - | 5.00 | 2,125,908 |
| Asia Map Quiz | 0 | - | 4.99 | 922,987 |
| Random U.S. States on a Map | 0 | - | 4.96 | 629,188 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,354 |
| U.S. State Flags | 0 | - | 4.89 | 172,172 |
| Hawaiian Islands | 0 | - | 4.83 | 42,860 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,166 |
| U.S. States that Border Canada | 0 | - | 4.91 | 186,205 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,461 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 89,506 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 222,039 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 135,284 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,253,708 |
| Flags of Asia Quiz | 0 | - | 4.99 | 618,205 |
| Countries of Europe by Population | 0 | - | 4.98 | 182,362 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,161 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,320 |
| Biggest European Cities by Century | 0 | - | 4.99 | 145,996 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,725 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,410 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,090 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,433 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,749 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,604 |
| Cities in European History #1 | 0 | - | 4.63 | 134,447 |
| Southernmost Major Cities in the U.S. | 0 | - | 4.43 | 36,664 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.96 | 111,257 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 75,808 |
| Cities in U.S. History #1 | 0 | - | 4.31 | 45,497 |
| Africa Capitals Quiz | 0 | - | 4.99 | 742,138 |
| Former Capitals | 0 | - | 4.88 | 71,614 |
| Asia Capitals Quiz | 0 | - | 4.98 | 697,211 |
| Europe Capital to Country | 0 | - | 4.99 | 251,605 |
| Asia Capital to Country | 0 | - | 4.96 | 127,214 |
| EU Capitals with No Hints | 0 | - | 4.96 | 146,664 |
| European Capitals by Map | 0 | - | 4.99 | 141,461 |
| African Capitals by Map | 0 | - | 4.99 | 141,510 |
| South America Capitals Quiz | 0 | - | 5.00 | 483,926 |
| Asian Capitals by Map | 0 | - | 4.98 | 63,626 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 92,654 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 84,994 |
| European Coastal Capitals | 0 | - | 4.95 | 91,103 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 53,079 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 271,772 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 225,330 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 82,060 |
| Random U.S. State Capitals on a Map | 0 | - | 4.92 | 104,443 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,266 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,478 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,610 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,944 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,617 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 116,730 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,204 |
| Countries of Asia in 1900 | 0 | - | 4.50 | 58,193 |
| Countries of the Middle East | 0 | - | 4.96 | 202,257 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,936 |
| The Only European Country ... | 0 | - | 4.91 | 218,335 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,429 |
| Slavic Countries | 0 | - | 4.96 | 112,182 |
| African Island Countries | 0 | - | 4.96 | 102,235 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,144 |
| Countries in the Byzantine Empire | 0 | - | 4.95 | 72,379 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,834 |
| Straight Shot to Antarctica | 0 | - | 4.94 | 43,078 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 126,515 |
| Countries of Europe After World War II | 0 | - | 4.99 | 189,091 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 157,195 |
| Countries of Africa | 0 | - | 5.00 | 2,552,829 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,028,891 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 127,568 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 108,103 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 154,311 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 218,058 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,280 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,350 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,860 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,639 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,831 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 117,305 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 162,074 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,716 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 108,989 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,964 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 643,145 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,386,207 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 904,180 |
| South America Map Quiz | 0 | - | 5.00 | 1,554,063 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,389 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,607 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 51,251 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,640 |
| North America Map Quiz | 0 | - | 4.98 | 250,648 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 99,682 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,416 |
| Australia Map Quiz | 0 | - | 4.95 | 345,754 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,703 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 99,398 |
| East Asia Cities Map Quiz | 0 | - | 4.96 | 110,615 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,909 |
| Flags of Africa Quiz | 0 | - | 5.00 | 475,726 |
| Flags of North and South America | 0 | - | 4.99 | 375,854 |
| Australian States and Territories | 0 | - | 4.96 | 142,608 |
| Canada Provinces and Territories | 0 | - | 5.00 | 345,134 |
| Territories of the United States | 0 | - | 4.80 | 52,554 |
| Counties of England | 0 | - | 4.97 | 801,237 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 174,915 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.82 | 56,166 |
| Australian Immigration by Country | 0 | - | 4.81 | 77,445 |
| Five Biggest Immigrant Groups by Decade in the US | 0 | - | 4.79 | 39,822 |
| African East Coast | 0 | - | 4.96 | 96,548 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 71,893 |
| Top African Languages on a Map | 0 | - | 4.94 | 74,922 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,196 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,304 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,257 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,552,216 |
| Confederate States of the U.S. Civil War | 0 | - | 4.91 | 129,532 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,726 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,580 |
