| Most-Visited Countries by U.S. Presidents | 0 | - | 4.96 | 193,461 |
| U.S. Presidents by State | 0 | - | 4.34 | 68,659 |
| The John F. Kennedy Presidency | 0 | - | 4.47 | 43,696 |
| The Jimmy Carter Presidency | 0 | - | 4.41 | 19,124 |
| United States Map Quiz | 0 | - | 4.98 | 4,155,419 |
| Random Sequential U.S. States on a Map | 0 | - | 4.99 | 234,268 |
| The Richard Nixon Presidency | 0 | - | 4.05 | 22,010 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,937 |
| Random U.S. States on a Map | 0 | - | 4.96 | 625,708 |
| US States Quiz | 0 | - | 5.00 | 16,849,432 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 93,626 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 81,655 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,485 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,420 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,841 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 243,533 |
| Random Sequential African Countries on a Map | 0 | - | 5.00 | 127,452 |
| Random Sequential Asian Countries on a Map | 0 | - | 4.99 | 118,933 |
| Random Sequential European Countries on a Map | 0 | - | 4.99 | 217,040 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,663 |
| U.S. Cities with the Most International Tourists | 0 | - | 4.88 | 75,384 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,857 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 331,454 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,410 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,782 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,441 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 175,117 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 105,860 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,730 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,078 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,095 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,267 |
| Vietnam War Countries | 0 | - | 4.82 | 94,137 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,602 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,597 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,240 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,187 |
| Countries that Bordered the USSR | 0 | - | 4.93 | 165,260 |
| Countries Bordering China Since 1914 | 0 | - | 4.93 | 95,148 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 109,471 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,609 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,709 |
| Europe Map Quiz | 0 | - | 5.00 | 4,758,542 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,659 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,130 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,391 |
| Pixelated United States Map | 0 | - | 4.87 | 94,147 |
| US States with an Empty Map | 0 | - | 5.00 | 623,785 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,732 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 505,946 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,266 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,286 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 95,863 |
| U.S. States with Short Names | 0 | - | 4.91 | 148,820 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,078 |
| U.S. States By Population | 0 | - | 4.92 | 153,446 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,299 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,369 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,474 |
| 10 Northernmost U.S. States | 0 | - | 4.90 | 82,434 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,010 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,145 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,529 |
| Top 10 Largest U.S. States by Area | 0 | - | 4.95 | 159,852 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,635 |
| Top 10 Poorest U.S. States by Median Income | 0 | - | 4.86 | 125,112 |
| U.S. States with the Highest Percentage of Hispanics | 0 | - | 4.85 | 69,450 |
| Top 10 Newest U.S. States | 0 | - | 4.85 | 86,156 |
| Presidential Actors | 0 | - | 4.36 | 19,161 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 143,908 |
| Random State Capital to U.S. State | 0 | - | 4.84 | 88,921 |
| Biggest Roman Empire Countries | 0 | - | 4.87 | 101,797 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,343 |
| Modern-Day Countries of the Ottoman Empire on a Map | 0 | - | 4.96 | 82,573 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,055 |
| Countries Closest to Alaska | 0 | - | 4.93 | 124,196 |
| Countries Closest to Maine | 0 | - | 4.85 | 67,030 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,447,473 |
| Oceania Map Quiz | 0 | - | 4.98 | 641,297 |
| Africa Map Quiz | 0 | - | 5.00 | 2,115,989 |
| Asia Map Quiz | 0 | - | 4.99 | 915,540 |
| U.S. States that Start with M - Shape Quiz | 0 | - | 4.94 | 58,048 |
| U.S. State Flags | 0 | - | 4.89 | 170,022 |
| Great Plains States and Provinces on a Map | 0 | - | 4.95 | 49,315 |
| Hawaiian Islands | 0 | - | 4.83 | 42,669 |
| Rivers of the United States | 0 | - | 4.93 | 66,113 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,821 |
| U.S. States that Border Canada | 0 | - | 4.91 | 184,583 |
| U.S. States that Border Tennessee | 0 | - | 4.83 | 65,289 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 208,618 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,562 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,496 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 93,849 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,885 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,856 |
| U.S. Presidents by Picture | 0 | - | 4.87 | 426,145 |
| Random U.S. Presidents by Picture | 0 | - | 4.40 | 66,190 |
| Cities in European History #1 | 0 | - | 4.62 | 133,882 |
| Cities in U.S. History #1 | 0 | - | 4.31 | 45,404 |
| Africa Capitals Quiz | 0 | - | 4.99 | 736,602 |
| Asia Capitals Quiz | 0 | - | 4.98 | 691,755 |
| Random U.S. State Capitals on a Map | 0 | - | 4.92 | 103,952 |
| US States and State Capitals | 0 | - | 4.99 | 161,712 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,733 |
| Modern Countries Conquered by Alexander the Great | 0 | - | 4.90 | 105,570 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,200 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,721 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,001 |
| Countries of Asia in 1900 | 0 | - | 4.50 | 57,945 |
| The Only European Country ... | 0 | - | 4.91 | 216,263 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,965 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,926 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,615 |
| Modern-Day Countries of the Roman Empire on a Map | 0 | - | 4.99 | 125,680 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,197 |
| Countries of Europe Before World War I | 0 | - | 4.99 | 156,382 |
| Random Asian Countries on a Map | 0 | - | 4.91 | 169,856 |
| Random African Countries on a Map | 0 | - | 4.99 | 295,502 |
| Random European Countries on a Map | 0 | - | 4.97 | 283,229 |
| Countries of Africa | 0 | - | 5.00 | 2,532,869 |
| Most-Visited Countries by Popes | 0 | - | 4.56 | 83,642 |
| Vatican City Country Quiz | 0 | - | 4.53 | 44,315 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,381,930 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,568 |
| South and Central Asia Map Quiz | 0 | - | 4.94 | 98,802 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,744 |
| Australia Map Quiz | 0 | - | 4.95 | 344,126 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,185 |
| African East Coast | 0 | - | 4.96 | 95,928 |
| U.S. States or European Countries by GDP | 0 | - | 4.98 | 88,821 |
| Fifty US States in One Minute | 0 | - | 4.61 | 3,535,905 |
| Top 10 U.S. States by Republican Party Support | 0 | - | 4.44 | 75,465 |
| Top 10 U.S. States by Democratic Party Support | 0 | - | 4.63 | 81,267 |
| Category Elimination - U.S. States #1 | 0 | - | 4.88 | 220,544 |
| Category Elimination - U.S. States #2 | 0 | - | 4.82 | 133,998 |
| Midwestern States of the U.S. | 0 | - | 4.88 | 13,695 |
| First Names of U.S. Presidents | 0 | - | 4.86 | 381,276 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,241,759 |
| Flags of Asia Quiz | 0 | - | 4.99 | 612,479 |
| Countries of Europe by Population | 0 | - | 4.98 | 180,407 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,471 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,638 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 183,654 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 193,147 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 103,720 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,377 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,996 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,848 |
| Biggest European Cities by Century | 0 | - | 4.99 | 145,333 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,165 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,125 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,621 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,199 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,479 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,149 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,642 |
| Official Cities in the UK | 0 | - | 4.89 | 283,302 |
| U.S Cities by African-American Population | 0 | - | 4.42 | 95,295 |
| Southernmost Major Cities in the U.S. | 0 | - | 4.43 | 36,569 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 110,512 |
| 1M Cities by Proximity - United States | 0 | - | 4.63 | 150,477 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 74,935 |
| Biggest Cities in a Strip of the United States Map | 0 | - | 4.74 | 40,890 |
| Former Capitals | 0 | - | 4.88 | 71,405 |
| Europe Capital to Country | 0 | - | 4.99 | 249,766 |
| Asia Capital to Country | 0 | - | 4.96 | 126,548 |
| EU Capitals with No Hints | 0 | - | 4.96 | 145,713 |
| European Capitals by Map | 0 | - | 4.99 | 138,822 |
| African Capitals by Map | 0 | - | 4.99 | 133,540 |
| South America Capitals Quiz | 0 | - | 5.00 | 480,771 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,375 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 62,356 |
| Asian Capitals by Map | 0 | - | 4.98 | 62,180 |
| Top 10 Most Remote European Capitals | 0 | - | 4.87 | 93,949 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 119,091 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,965 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,759 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 84,308 |
| European Coastal Capitals | 0 | - | 4.95 | 90,464 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,533 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 269,518 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 223,725 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,779 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 82,119 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 61,210 |
| European Capitals Ending in N | 0 | - | 4.92 | 81,220 |
| Countries with American Expatriates | 0 | - | 4.53 | 42,569 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,327,125 |
| Most Mentioned Enemies of the USA | 0 | - | 4.77 | 175,339 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,799 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,390 |
| Biggest British Empire Countries | 0 | - | 4.74 | 99,852 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,126 |
| Countries of the Middle East | 0 | - | 4.96 | 200,923 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,125 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,145 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,013 |
| Slavic Countries | 0 | - | 4.96 | 111,556 |
| African Island Countries | 0 | - | 4.96 | 101,515 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 105,002 |
