| Biggest Cities in the World | 0 | - | 4.91 | 804,531 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,353 |
| Biggest City by Time Zone | 0 | - | 4.88 | 68,822 |
| Biggest City in Every Country | 0 | - | 4.98 | 101,781 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 227,087 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 111,316 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 149,506 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 80,655 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 85,158 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 420,158 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 80,848 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 60,545 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.92 | 70,609 |
| Ten Southernmost Megacities | 0 | - | 4.87 | 65,129 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 68,290 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 132,107 |
| Biggest Cities in the United States | 0 | - | 4.94 | 985,622 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,728 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 581,366 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 129,466 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,519 |
| Largest City by Island | 0 | - | 4.87 | 72,368 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,367 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,583 |
| Biggest European Cities by Century | 0 | - | 4.99 | 146,059 |
| Megacities on a World Map | 0 | - | 4.98 | 256,547 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,710 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 75,560 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 115,977 |
| Biggest City in Each U.S. State | 0 | - | 4.87 | 169,537 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,839 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,870 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,890 |
| Biggest Cities in Asia | 0 | - | 4.95 | 117,995 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 50,385 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 348,216 |
| Megacities on an Empty Map | 0 | - | 4.97 | 119,088 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 51,446 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,634 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.84 | 69,272 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,938 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,519 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 137,577 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 116,286 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,452,677 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,109 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,882 |
| Countries with Megacities | 0 | - | 4.99 | 266,566 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,584 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,965 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,883 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,070 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 60,022 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,627 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 56,130 |
| Biggest City by Region | 0 | - | 4.50 | 36,367 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,304 |
| Biggest Cities by Latitude Range | 0 | - | 4.80 | 32,537 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 159,946 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,906 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 119,160 |
| Northernmost Major City by Country | 0 | - | 4.57 | 33,292 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 52,428 |
| Two Largest Cities by First Two Letters | 0 | - | 4.52 | 83,504 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 84,299 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 42,359 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 117,984 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,823 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,548 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,240 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,838 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,551 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,827 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,113 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,513 |
| Biggest Cities in Europe | 0 | - | 4.73 | 548,678 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 56,466 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 127,235 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 57,333 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,933 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,747 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 165,679 |
| Biggest Cities in History | 0 | - | 4.52 | 90,520 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 78,869 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.54 | 43,582 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,661 |
| Biggest Cities in the Blue Banana | 0 | - | 4.57 | 36,631 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.89 | 97,167 |
| All Cities in China with Population of 1 Million | 0 | - | 4.82 | 46,489 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,413 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 99,846 |
| All Cities in India with Population of 1 Million | 0 | - | 4.84 | 47,944 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 42,155 |
| Every 100k+ City in the United States on a Map | 0 | - | 4.97 | 116,180 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 125,052 |
| Biggest Cities Starting With D | 0 | - | 4.52 | 117,100 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 109,883 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 123,496 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 143,982 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 127,632 |
| Countries of Europe by Population | 0 | - | 4.98 | 182,605 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,284 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,992 |
| Demographics Multiple Choice | 0 | - | 4.70 | 42,368 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,865 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 131,207 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,559 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,671 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,795 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 93,144 |
| Fastest Growing U.S. Cities | 0 | - | 4.35 | 73,164 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 28,131 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,900 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,728 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,454 |
| Biggest Cities by Trait #2 | 0 | - | 4.47 | 20,861 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.70 | 67,966 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,671 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,809 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,465 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,125 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,473 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,813 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,676 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,536 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,783 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 234,161 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.97 | 184,858 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 194,517 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 104,765 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,785 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.98 | 159,907 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 74,479 |
| Biggest English Cities by Century | 0 | - | 4.91 | 106,831 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,177 |
| Most Populous Islands | 0 | - | 4.80 | 123,247 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,366 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,624 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,959 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,440 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.86 | 23,746 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.64 | 108,095 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,952 |
| Five Biggest Cities by Country | 0 | - | 4.70 | 167,210 |
| Biggest Cities Once in the Roman Empire | 0 | - | 4.81 | 76,066 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 32,073 |
| Flags to Largest Cities | 0 | - | 4.54 | 51,756 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,978 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 223,969 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 163,693 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 105,741 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 87,451 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 127,265 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 128,759 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.68 | 23,809 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,746 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,979 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,559 |
| Largest World Cities With Four Letters | 0 | - | 4.39 | 64,448 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 47,070 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.43 | 91,954 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 44,146 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,983 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 32,101 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 40,506 |
| Most Populous U.S. Cities as a Percent of Their State | 0 | - | 4.78 | 55,382 |
| Cities in European Economic Areas on a Map | 0 | - | 4.70 | 18,056 |
| Biggest Cities in Australia on a Map | 0 | - | 4.62 | 38,152 |
| Boundary Waters | 0 | - | 4.92 | 88,720 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.87 | 35,373 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,594 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,204 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,863 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.77 | 116,062 |
| Jewish Cities Quiz | 0 | - | 4.34 | 61,973 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.94 | 84,836 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.46 | 73,309 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.41 | 49,024 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 51,714 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.61 | 44,522 |
| Cities in Squares on a Map - North America | 0 | - | 4.31 | 21,567 |
| Largest Nordic Cities on a Map | 0 | - | 4.78 | 37,343 |
| Cities on Interstate 90 on a Map | 0 | - | 4.45 | 32,348 |
| Biggest Urban Areas in the UK | 0 | - | 4.43 | 176,652 |
| Biggest Cities in Japan | 0 | - | 4.68 | 83,443 |
| Biggest Cities in Russia | 0 | - | 4.49 | 82,718 |
| Biggest Cities in France | 0 | - | 4.70 | 225,111 |
| Biggest Cities in Spain | 0 | - | 4.64 | 171,997 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 56,235 |
| Biggest Cities in Poland | 0 | - | 4.62 | 54,233 |
| Biggest Cities in the UK | 0 | - | 4.48 | 105,725 |
| Biggest Cities in China | 0 | - | 4.53 | 159,699 |
| Biggest Cities in Canada | 0 | - | 4.54 | 133,413 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 47,422 |
| Biggest Cities in India | 0 | - | 4.64 | 68,016 |
| Biggest Cities in Italy | 0 | - | 4.77 | 242,183 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,697,341 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,801,663 |
| Landlocked Countries | 0 | - | 4.99 | 424,765 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,872 |
