| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 159,352 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,337 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.90 | 81,736 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 41,843 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 116,987 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,275 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,690,142 |
| Biggest Cities in Asia | 0 | - | 4.95 | 117,044 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 50,112 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 345,875 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 51,023 |
| Biggest Cities in the World | 0 | - | 4.91 | 799,163 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,432 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 136,845 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 115,396 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 89,115 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 417,795 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.44 | 88,778 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 43,983 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,842 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 40,407 |
| Biggest Cities in the United States | 0 | - | 4.94 | 978,757 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,249 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,912 |
| Biggest City by Time Zone | 0 | - | 4.88 | 67,989 |
| Biggest City in Every Country | 0 | - | 4.98 | 100,616 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 225,170 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 110,399 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 134,000 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 79,866 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 84,552 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 118,474 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 79,969 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 59,807 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 70,079 |
| Ten Southernmost Megacities | 0 | - | 4.87 | 64,562 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 67,674 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 130,458 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,670 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 175,701 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 128,585 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,457 |
| Biggest Cities in Europe | 0 | - | 4.73 | 546,501 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,758 |
| Largest City by Island | 0 | - | 4.87 | 71,897 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,023 |
| Most Populous World Capitals | 0 | - | 4.94 | 175,996 |
| Biggest European Cities by Century | 0 | - | 4.99 | 145,556 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 56,160 |
| Megacities on a World Map | 0 | - | 4.98 | 254,665 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 126,164 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 578,379 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,368 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 74,969 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 56,757 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 114,736 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,564 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 168,425 |
| U.S. Cities by Hispanic Population | 0 | - | 4.32 | 38,334 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 96,076 |
| All Cities in China with Population of 1 Million | 0 | - | 4.82 | 46,097 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,214 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 98,801 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,568 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 93,897 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,284 |
| Megacities on an Empty Map | 0 | - | 4.97 | 118,452 |
| Cities of China (With Some Help) | 0 | - | 4.90 | 31,583 |
| US States Quiz | 0 | - | 5.00 | 16,880,925 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,168 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,215 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,471 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,505 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,306 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.70 | 66,271 |
| Biggest Cities in Canada | 0 | - | 4.54 | 132,891 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,124 |
| Biggest English Cities by Century | 0 | - | 4.90 | 106,321 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,921 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,546 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 93,882 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 81,823 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,675 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 244,145 |
| Mexico States Map Quiz | 0 | - | 4.84 | 104,764 |
| Name the U.S. National Parks | 0 | - | 4.86 | 59,969 |
| States of Mexico | 0 | - | 4.96 | 176,180 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 332,208 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,446,069 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,427 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,539 |
| Countries with Megacities | 0 | - | 4.99 | 263,585 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,375 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,289 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,653 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,326 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 109,713 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 91,794 |
| Most-Visited Countries by Canadians | 0 | - | 4.82 | 39,396 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,375 |
| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,573 |
| Pixelated United States Map | 0 | - | 4.87 | 94,289 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 117,899 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 111,458 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 113,469 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,045 |
| U.S. States that Start with M | 0 | - | 4.93 | 187,328 |
| U.S. States By Population | 0 | - | 4.92 | 153,564 |
| U.S. States that Start with N | 0 | - | 4.95 | 171,479 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,454 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,332 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,224 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,640 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 59,597 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,093 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,672 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,997 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,475 |
| Biggest City by Region | 0 | - | 4.50 | 36,231 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,148 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,991 |
| Northernmost Major City by Country | 0 | - | 4.56 | 33,193 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 52,355 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 83,277 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,421 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 37,923 |
| Canadian Metro Areas over 100,000 People | 0 | - | 4.47 | 31,197 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 106,064 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,837 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,185 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,145 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,465 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,498 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,786 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,180 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,494 |
| US States with an Empty Map | 0 | - | 5.00 | 624,795 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,085 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 48,637 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,253 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,741 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,857 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,934 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.48 | 76,143 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,414 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,564 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,096 |
| Biggest English-Speaking Cities | 0 | - | 4.44 | 152,613 |
| Biggest Cities in History | 0 | - | 4.52 | 90,174 |
| Top 10 World Cities Through History | 0 | - | 4.42 | 77,582 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.94 | 84,522 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.45 | 73,110 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.41 | 48,839 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 51,561 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,421 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.59 | 44,025 |
| Largest Nordic Cities on a Map | 0 | - | 4.77 | 37,101 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,472 |
| Cities on Interstate 90 on a Map | 0 | - | 4.45 | 32,197 |
| Biggest Urban Areas in the UK | 0 | - | 4.43 | 176,328 |
| Biggest Cities in Japan | 0 | - | 4.69 | 83,123 |
| Biggest Cities in Russia | 0 | - | 4.49 | 82,438 |
| Biggest Cities in France | 0 | - | 4.70 | 224,045 |
| Biggest Cities in Spain | 0 | - | 4.63 | 171,191 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 56,009 |
| Biggest Cities in Poland | 0 | - | 4.63 | 53,919 |
| Biggest Cities in the UK | 0 | - | 4.48 | 105,277 |
| Biggest Cities in China | 0 | - | 4.53 | 158,669 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 47,226 |
| Biggest Cities in India | 0 | - | 4.64 | 67,765 |
| Biggest Cities in Italy | 0 | - | 4.77 | 241,138 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 124,380 |
| Biggest Cities Starting With D | 0 | - | 4.52 | 116,676 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 109,455 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 123,025 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 143,426 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 127,147 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 144,606 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 209,010 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,670 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,686 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,105 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,916 |
| Countries of Europe by Population | 0 | - | 4.98 | 180,886 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,657 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,624 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 130,479 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 107,922 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,186 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,332 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,907 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,030 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,313 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,207 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,769 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,265 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,556 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,275 |
| Canada or Africa by Area | 0 | - | 4.78 | 18,369 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,999 |
