| Biggest Cities in the World | 0 | - | 4.91 | 796,633 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,723 |
| Biggest City by Time Zone | 0 | - | 4.88 | 67,466 |
| Biggest City in Every Country | 0 | - | 4.98 | 99,908 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 224,124 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 109,886 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 132,810 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 79,369 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 84,207 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 416,486 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 79,458 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 53,672 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,770 |
| Ten Southernmost Megacities | 0 | - | 4.85 | 58,890 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 67,370 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 129,842 |
| Biggest Cities in the United States | 0 | - | 4.94 | 975,516 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 365,530 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 577,002 |
| Countries of Europe by Population | 0 | - | 4.98 | 180,165 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 128,025 |
| Biggest Cities by Language | 0 | - | 4.96 | 245,996 |
| Largest City by Island | 0 | - | 4.87 | 71,668 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 70,783 |
| Most Populous World Capitals | 0 | - | 4.94 | 175,667 |
| Biggest European Cities by Century | 0 | - | 4.99 | 145,243 |
| Megacities on a World Map | 0 | - | 4.98 | 253,357 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,207 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 74,702 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 114,215 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 168,073 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,658 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,440 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 183,514 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 193,022 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 103,632 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,346 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 123,889 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,895 |
| Biggest Cities in Asia | 0 | - | 4.95 | 116,642 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,890 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 344,755 |
| Megacities on an Empty Map | 0 | - | 4.97 | 118,102 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,805 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 41,359 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,895 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,791 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,396 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 223,891 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 136,510 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 114,968 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,144 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,699 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,997 |
| Countries with Megacities | 0 | - | 4.99 | 259,305 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,862 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,977 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,151 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,979 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 59,395 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,046 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,921 |
| Biggest City by Region | 0 | - | 4.50 | 36,121 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,053 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 159,029 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,060 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 118,135 |
| Northernmost Major City by Country | 0 | - | 4.56 | 33,151 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,324 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 83,163 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 79,226 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 41,574 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 116,481 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,037 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,364 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,551 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,411 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,673 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,260 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,368 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,923 |
| Biggest Cities in Europe | 0 | - | 4.73 | 545,375 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 55,959 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 125,644 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 56,509 |
| Biggest Cities in Germany | 0 | - | 4.95 | 292,997 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,148 |
| Biggest English-Speaking Cities | 0 | - | 4.44 | 152,119 |
| Biggest Cities in History | 0 | - | 4.52 | 90,004 |
| Top 10 World Cities Through History | 0 | - | 4.41 | 75,982 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,354 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,391 |
| Biggest Cities in the Blue Banana | 0 | - | 4.56 | 36,306 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 95,636 |
| All Cities in China with Population of 1 Million | 0 | - | 4.81 | 45,947 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,142 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 98,340 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,469 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 124,116 |
| Biggest Cities Starting With D | 0 | - | 4.52 | 116,456 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 109,208 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 122,517 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 143,108 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 126,875 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,387 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,802 |
| Demographics Multiple Choice | 0 | - | 4.70 | 42,214 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,497 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 130,208 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 107,700 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,968 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,155 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,823 |
| Fastest Growing U.S. Cities | 0 | - | 4.35 | 73,000 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 28,032 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,755 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,534 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.73 | 73,386 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,239 |
| Biggest Cities by Trait #2 | 0 | - | 4.47 | 20,525 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.69 | 64,311 |
| Cities of China (With Some Help) | 0 | - | 4.90 | 31,497 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,731 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,100 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,076 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,433 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,154 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,435 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,078 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,779 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,902 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 143,867 |
| Countries with Most Nobel Prizes by Continent | 0 | - | 4.93 | 59,902 |
| Five Coldest Countries by Continent | 0 | - | 4.97 | 76,496 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 159,039 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,674 |
| Biggest English Cities by Century | 0 | - | 4.90 | 106,164 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,583 |
| Five Countries by a Single Word by Continent | 0 | - | 4.91 | 77,935 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,463 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 194,903 |
| Most Populous Islands | 0 | - | 4.80 | 122,786 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,275 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,505 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,767 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,131 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 23,307 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.70 | 107,645 |
| Biggest Cities in Latin America | 0 | - | 4.47 | 64,670 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 166,347 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 31,867 |
| Flags to Largest Cities | 0 | - | 4.54 | 51,240 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,912 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 222,719 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 162,501 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 105,158 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 86,976 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 126,359 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 128,052 |
| Five Most Inland Capital Cities by Continent | 0 | - | 4.90 | 12,378 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.68 | 23,590 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,318 |
| Biggest European Cities by Letter | 0 | - | 4.54 | 126,551 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,445 |
| Largest World Cities With Four Letters | 0 | - | 4.36 | 51,176 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,957 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 84,816 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 43,910 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,774 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 31,984 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 40,338 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 37,830 |
| Total United States Immigration by Country | 0 | - | 4.91 | 111,330 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 243,229 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,352 |
| Boundary Waters | 0 | - | 4.92 | 88,373 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,079 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,904 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.94 | 62,158 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,333 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.77 | 115,512 |
| Jewish Cities Quiz | 0 | - | 4.34 | 61,779 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.94 | 84,348 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.45 | 73,014 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.41 | 48,743 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 51,474 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.59 | 43,860 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 21,437 |
| Largest Nordic Cities on a Map | 0 | - | 4.77 | 37,015 |
| Cities on Interstate 90 on a Map | 0 | - | 4.45 | 32,113 |
| Biggest Urban Areas in the UK | 0 | - | 4.42 | 176,197 |
| Biggest Cities in Japan | 0 | - | 4.69 | 82,920 |
| Biggest Cities in Russia | 0 | - | 4.49 | 82,304 |
| Biggest Cities in France | 0 | - | 4.70 | 223,596 |
| Biggest Cities in Spain | 0 | - | 4.63 | 170,845 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 55,899 |
| Biggest Cities in Poland | 0 | - | 4.63 | 53,789 |
| Biggest Cities in the UK | 0 | - | 4.48 | 105,069 |
| Biggest Cities in China | 0 | - | 4.52 | 158,225 |
| Biggest Cities in Canada | 0 | - | 4.54 | 132,681 |
