| Most Populous World Capitals | 0 | - | 4.94 | 175,651 |
| Biggest Cities in the World | 0 | - | 4.91 | 796,521 |
| Biggest City by Time Zone | 0 | - | 4.88 | 67,443 |
| Biggest City in Every Country | 0 | - | 4.98 | 99,883 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 224,081 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 109,859 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 132,746 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 79,347 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 84,186 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 79,431 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 53,658 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,758 |
| Ten Southernmost Megacities | 0 | - | 4.85 | 57,209 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 67,355 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 129,821 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 416,444 |
| Biggest Cities in the United States | 0 | - | 4.93 | 975,368 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 365,507 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,643 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 123,874 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 128,007 |
| Biggest Cities by Language | 0 | - | 4.96 | 245,968 |
| Largest City by Island | 0 | - | 4.87 | 71,656 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 70,774 |
| Biggest European Cities by Century | 0 | - | 4.99 | 145,233 |
| Megacities on a World Map | 0 | - | 4.98 | 253,303 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 576,947 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,200 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 74,670 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 114,180 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 168,059 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,809 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,863 |
| Biggest Cities in Asia | 0 | - | 4.95 | 116,624 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,888 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 344,719 |
| Megacities on an Empty Map | 0 | - | 4.97 | 118,090 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,796 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,968 |
| Countries with Megacities | 0 | - | 4.99 | 258,481 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,837 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,955 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,120 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,965 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,024 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,655 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,787 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,391 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 223,867 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 136,492 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 114,949 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 59,388 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,042 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,918 |
| Biggest City by Region | 0 | - | 4.50 | 36,118 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,050 |
| Northernmost Major City by Country | 0 | - | 4.56 | 33,148 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,320 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 83,161 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,358 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,538 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,372 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,661 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,254 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,354 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,913 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 159,015 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,049 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 118,120 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 79,218 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 41,561 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 116,462 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,030 |
| Biggest Cities in Europe | 0 | - | 4.72 | 545,313 |
| Africa Capitals Quiz | 0 | - | 4.99 | 735,791 |
| Asia Capitals Quiz | 0 | - | 4.98 | 690,948 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,795 |
| Demographics Multiple Choice | 0 | - | 4.70 | 42,212 |
| Biggest English-Speaking Cities | 0 | - | 4.44 | 152,041 |
| Fastest Growing U.S. Cities | 0 | - | 4.35 | 72,999 |
| Biggest Cities in History | 0 | - | 4.52 | 89,996 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 75,659 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 28,030 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,754 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,532 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 55,953 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 125,623 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,351 |
| Biggest Cities by Trait #2 | 0 | - | 4.46 | 20,520 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 56,502 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,385 |
| Biggest Cities in the Blue Banana | 0 | - | 4.56 | 36,300 |
| Biggest Cities in Germany | 0 | - | 4.95 | 292,955 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 124,108 |
| Biggest Cities Starting With D | 0 | - | 4.52 | 116,448 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 109,196 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 122,512 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 143,097 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 126,865 |
| Countries of Europe by Population | 0 | - | 4.98 | 180,127 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,367 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,494 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 130,197 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 107,685 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,964 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,146 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,816 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,713 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,087 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,067 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,404 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,152 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,429 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,070 |
| Europe Capital to Country | 0 | - | 4.99 | 249,549 |
| Asia Capital to Country | 0 | - | 4.96 | 126,468 |
| EU Capitals with No Hints | 0 | - | 4.96 | 145,566 |
| European Capitals by Map | 0 | - | 4.99 | 138,536 |
| African Capitals by Map | 0 | - | 4.99 | 133,352 |
| Asian Capitals by Map | 0 | - | 4.98 | 62,067 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,868 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 84,226 |
| European Coastal Capitals | 0 | - | 4.95 | 90,371 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,496 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 269,137 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 223,538 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,739 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,772 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,887 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.73 | 73,379 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,236 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.68 | 63,988 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 95,603 |
| All Cities in China with Population of 1 Million | 0 | - | 4.81 | 45,941 |
| Cities of China (With Some Help) | 0 | - | 4.90 | 31,491 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,139 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 98,315 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,462 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 41,349 |
| Every 100k+ City in the United States on a Map | 0 | - | 4.97 | 113,839 |
| Boundary Waters | 0 | - | 4.92 | 88,370 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,072 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,893 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.94 | 62,148 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,321 |
| Most Populous Islands | 0 | - | 4.80 | 122,775 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,274 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,500 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,416 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 183,495 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 193,006 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 103,613 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,766 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,340 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 159,024 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,123 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,658 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.84 | 23,301 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 31,866 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,912 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 162,488 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 105,156 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 86,974 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 126,349 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 128,040 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,572 |
| South America Capitals Quiz | 0 | - | 5.00 | 480,399 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,059 |
| African Capitals - Map Quiz | 0 | - | 4.94 | 62,234 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,884 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,972 |
| Five Most Inland Capital Cities by Continent | 0 | - | 4.90 | 12,222 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,686 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 82,071 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 61,082 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 226,281 |
| European Capitals Ending in N | 0 | - | 4.92 | 81,162 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.68 | 23,587 |
| Capitals of the Stans | 0 | - | 4.95 | 26,738 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.70 | 107,638 |
| Biggest Cities in Latin America | 0 | - | 4.47 | 64,668 |
| Biggest English Cities by Century | 0 | - | 4.90 | 106,157 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 166,335 |
| Flags to Largest Cities | 0 | - | 4.54 | 51,239 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 222,694 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,321,846 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.77 | 115,497 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,314 |
| Biggest European Cities by Letter | 0 | - | 4.54 | 126,544 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,445 |
| Largest World Cities With Four Letters | 0 | - | 4.36 | 51,168 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,956 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 84,807 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 43,907 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,772 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 31,983 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 40,335 |
| Cities in European Economic Areas on a Map | 0 | - | 4.69 | 17,470 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 37,824 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,896 |
