| Biggest Cities in the World | 0 | - | 4.91 | 802,055 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 347,158 |
| Biggest Cities in Asia | 0 | - | 4.95 | 117,494 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 50,257 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,132 |
| Biggest City by Time Zone | 0 | - | 4.88 | 68,462 |
| Biggest City in Every Country | 0 | - | 4.98 | 101,304 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 226,262 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 110,923 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 146,422 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 80,320 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,995 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 84,899 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 137,213 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 419,173 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 80,495 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 60,282 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 115,860 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 70,384 |
| Ten Southernmost Megacities | 0 | - | 4.87 | 64,913 |
| Biggest Cities in the United States | 0 | - | 4.94 | 982,122 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,012 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 159,650 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,641 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 118,830 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 83,427 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 42,127 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 117,611 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,595 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 129,184 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,136 |
| Largest City by Island | 0 | - | 4.87 | 72,137 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,236 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,318 |
| Biggest European Cities by Century | 0 | - | 4.99 | 145,854 |
| Megacities on a World Map | 0 | - | 4.98 | 255,643 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 579,953 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,567 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 75,288 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 115,430 |
| Biggest City in Each U.S. State | 0 | - | 4.87 | 168,831 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,520 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 124,538 |
| Biggest Cities in Europe | 0 | - | 4.73 | 547,591 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 56,340 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 126,713 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 57,072 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,258 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,667 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,327 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,653 |
| Megacities on an Empty Map | 0 | - | 4.97 | 118,834 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 96,702 |
| All Cities in China with Population of 1 Million | 0 | - | 4.82 | 46,312 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,314 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 99,340 |
| All Cities in India with Population of 1 Million | 0 | - | 4.84 | 47,709 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,137 |
| Countries with Megacities | 0 | - | 4.99 | 265,134 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,954 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,603 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,217 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,675 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.84 | 69,123 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,776 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,620 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,389 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,449,494 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,290 |
| Biggest English Cities by Century | 0 | - | 4.90 | 106,531 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,853 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 59,816 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,586 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 56,066 |
| Biggest City by Region | 0 | - | 4.50 | 36,302 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,217 |
| Northernmost Major City by Country | 0 | - | 4.57 | 33,243 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 52,390 |
| Two Largest Cities by First Two Letters | 0 | - | 4.52 | 83,399 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,479 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,020 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,381 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,265 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,636 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 93,830 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,831 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,523 |
| Biggest Cities Once in the Roman Empire | 0 | - | 4.81 | 75,870 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 47,036 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.43 | 90,948 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 44,073 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,912 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 40,454 |
| Biggest Cities in Australia on a Map | 0 | - | 4.62 | 38,054 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,694,021 |
| United States Map Quiz | 0 | - | 4.98 | 4,164,774 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,044 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 176,688 |
| Biggest English-Speaking Cities | 0 | - | 4.44 | 165,212 |
| Biggest Cities in History | 0 | - | 4.52 | 90,352 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 78,430 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.54 | 43,508 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,568 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 124,600 |
| Biggest Cities Starting With D | 0 | - | 4.52 | 116,840 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 109,648 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 123,250 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 143,688 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 127,371 |
| Countries of Europe by Population | 0 | - | 4.98 | 181,787 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,961 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,924 |
| Demographics Multiple Choice | 0 | - | 4.70 | 42,316 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,738 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 130,834 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,248 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,406 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,556 |
| Fastest Growing U.S. Cities | 0 | - | 4.35 | 73,104 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 28,101 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,864 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,578 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.94 | 84,700 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.46 | 73,220 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.41 | 48,940 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 51,647 |
| Biggest Cities by Trait #2 | 0 | - | 4.47 | 20,753 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.59 | 44,348 |
| Largest Nordic Cities on a Map | 0 | - | 4.77 | 37,242 |
| Biggest Urban Areas in the UK | 0 | - | 4.43 | 176,495 |
| Biggest Cities in Japan | 0 | - | 4.68 | 83,291 |
| Biggest Cities in Russia | 0 | - | 4.49 | 82,583 |
| Biggest Cities in France | 0 | - | 4.70 | 224,595 |
| Biggest Cities in Spain | 0 | - | 4.64 | 171,611 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 56,123 |
| Biggest Cities in Poland | 0 | - | 4.62 | 54,082 |
| Biggest Cities in the UK | 0 | - | 4.48 | 105,533 |
| Biggest Cities in China | 0 | - | 4.53 | 159,221 |
| Biggest Cities in Canada | 0 | - | 4.54 | 133,161 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 47,332 |
| Biggest Cities in India | 0 | - | 4.64 | 67,898 |
| Biggest Cities in Italy | 0 | - | 4.77 | 241,640 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,363 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,571 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,341 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,981 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,371 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,675 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,482 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,283 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,461 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,026,807 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 642,191 |
| South America Map Quiz | 0 | - | 5.00 | 1,552,392 |
| Latin American Countries Map Quiz | 0 | - | 4.97 | 130,208 |
| Flags of North and South America | 0 | - | 4.99 | 374,807 |
| Canada Provinces and Territories | 0 | - | 5.00 | 344,179 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 93,989 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.69 | 60,342 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.69 | 79,391 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.75 | 43,881 |
| Biggest Cities in Brazil | 0 | - | 4.57 | 53,258 |
| Biggest Cities in Mexico | 0 | - | 4.52 | 39,442 |
| Most Populous Islands | 0 | - | 4.80 | 123,102 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,333 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,586 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,514 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.97 | 184,368 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 193,820 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 104,444 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,897 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,622 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 159,598 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,340 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 74,214 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 23,574 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.64 | 107,948 |
| Biggest Nordic Cities | 0 | - | 4.36 | 61,639 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 166,937 |
| U.S. Cities by Hispanic Population | 0 | - | 4.32 | 38,428 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 32,018 |
| Flags to Largest Cities | 0 | - | 4.54 | 51,577 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.52 | 23,655 |
| Cities of Ireland | 0 | - | 4.51 | 50,760 |
| Biggest Cities in New Zealand | 0 | - | 4.57 | 24,216 |
| Biggest Cities in Washington State | 0 | - | 4.44 | 36,313 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,955 |
| Biggest Cities in North Carolina | 0 | - | 4.64 | 35,153 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 223,544 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 163,048 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 105,490 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 87,268 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 127,008 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 128,510 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,966 |
| South America Capitals Quiz | 0 | - | 5.00 | 483,082 |
| North America Capitals Quiz | 0 | - | 4.99 | 220,869 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,347 |
| The Only American Country ... | 0 | - | 4.92 | 121,886 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 903,163 |
