| Biggest Cities in the World | 0 | - | 4.92 | 790,369 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,115 |
| Biggest City by Time Zone | 0 | - | 4.87 | 66,649 |
| Biggest City in Every Country | 0 | - | 4.98 | 98,679 |
| Five Most Populated Cities by Continent | 0 | - | 4.93 | 221,928 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 108,859 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.96 | 130,038 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 78,488 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 83,518 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,617 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 78,581 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 53,055 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,163 |
| Ten Southernmost Megacities | 0 | - | 4.85 | 56,746 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 66,683 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 128,529 |
| Biggest Cities in the United States | 0 | - | 4.93 | 966,643 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,788 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 573,245 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 126,466 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,854 |
| Largest City by Island | 0 | - | 4.87 | 71,043 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,393 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,551 |
| Biggest European Cities by Century | 0 | - | 4.98 | 143,496 |
| Megacities on a World Map | 0 | - | 4.98 | 250,962 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 66,797 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 73,867 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 112,761 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 167,148 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,618 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 122,980 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,039 |
| Biggest Cities in Asia | 0 | - | 4.95 | 115,324 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,563 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 342,032 |
| Megacities on an Empty Map | 0 | - | 4.96 | 102,508 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,297 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,914 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,534 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,117 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,472 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 135,586 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 113,794 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,435,040 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,627 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,199 |
| Countries with Megacities | 0 | - | 4.99 | 246,883 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,103 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,959 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,516 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,849 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 58,913 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 101,905 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,703 |
| Biggest City by Region | 0 | - | 4.50 | 35,994 |
| Most Populous 2nd Cities | 0 | - | 4.78 | 56,901 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,274 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,448 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 117,289 |
| Northernmost Major City by Country | 0 | - | 4.56 | 33,018 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,222 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 82,921 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,732 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 40,786 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,503 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,535 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,257 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,839 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,929 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,883 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,480 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,603 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,264 |
| Biggest Cities in Europe | 0 | - | 4.70 | 542,162 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 55,650 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 124,242 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 55,830 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,274 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 151,391 |
| Biggest Cities in History | 0 | - | 4.52 | 89,129 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 72,120 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,186 |
| Biggest World Cities in 1850 | 0 | - | 4.62 | 68,198 |
| Biggest Cities in the Blue Banana | 0 | - | 4.56 | 35,999 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.87 | 94,298 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 40,943 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.91 | 97,021 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,063 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 40,773 |
| Every 100k+ City in the United States on a Map | 0 | - | 4.97 | 112,490 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 123,504 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 115,962 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 108,596 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 121,907 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 142,177 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 125,991 |
| Countries of Europe by Population | 0 | - | 4.98 | 178,074 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,229 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,653 |
| Demographics Multiple Choice | 0 | - | 4.69 | 42,087 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,143 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,335 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,930 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,402 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,592 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,300 |
| Fastest Growing U.S. Cities | 0 | - | 4.34 | 72,862 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 27,978 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,665 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,464 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,112 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,029 |
| Biggest Cities by Trait #2 | 0 | - | 4.46 | 20,218 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.56 | 48,920 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,278 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,472 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,295 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,272 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,608 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,570 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,811 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,215 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,115 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,098 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,958 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 182,001 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 191,853 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 102,990 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 107,829 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,399 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,141 |
| Biggest English Cities by Century | 0 | - | 4.90 | 105,599 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,596 |
| Most Populous Islands | 0 | - | 4.79 | 121,992 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,202 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,404 |
| Countries by Population Decrease | 0 | - | 4.45 | 49,608 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 63,846 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 22,934 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.69 | 107,313 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,476 |
| Five Biggest Cities by Country | 0 | - | 4.70 | 165,663 |
| Biggest Cities Near a Border | 0 | - | 4.21 | 31,748 |
| Flags to Largest Cities | 0 | - | 4.55 | 50,784 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,840 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 221,372 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 161,768 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 104,590 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 86,627 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 125,773 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 127,441 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.68 | 23,389 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 56,951 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,229 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.61 | 65,311 |
| Largest World Cities With Four Letters | 0 | - | 4.36 | 50,661 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,856 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 84,247 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 43,701 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,616 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 31,880 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.43 | 40,168 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 37,553 |
| Boundary Waters | 0 | - | 4.92 | 88,042 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,815 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,284 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 61,294 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 59,837 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.74 | 99,455 |
| Jewish Cities Quiz | 0 | - | 4.34 | 61,648 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.95 | 84,002 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.45 | 72,758 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.41 | 48,477 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 51,251 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.59 | 43,429 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 21,332 |
| Largest Nordic Cities on a Map | 0 | - | 4.77 | 36,780 |
| Cities on Interstate 90 on a Map | 0 | - | 4.45 | 31,926 |
| Biggest Urban Areas in the UK | 0 | - | 4.42 | 175,794 |
| Biggest Cities in Japan | 0 | - | 4.67 | 82,522 |
| Biggest Cities in Russia | 0 | - | 4.49 | 82,021 |
| Biggest Cities in France | 0 | - | 4.69 | 222,032 |
| Biggest Cities in Spain | 0 | - | 4.63 | 169,832 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 55,654 |
| Biggest Cities in Poland | 0 | - | 4.62 | 53,447 |
| Biggest Cities in the UK | 0 | - | 4.48 | 104,146 |
| Biggest Cities in China | 0 | - | 4.53 | 157,015 |
| Biggest Cities in Canada | 0 | - | 4.54 | 131,830 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 46,951 |
| Biggest Cities in India | 0 | - | 4.70 | 67,333 |
| Biggest Cities in Italy | 0 | - | 4.75 | 239,453 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,677,646 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,917,967 |
| Landlocked Countries | 0 | - | 4.99 | 413,588 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,161 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 94,997 |
| Countries Losing the Most Population by 2070 | 0 | - | 4.40 | 84,130 |
| Population Trivia | 0 | - | 4.32 | 27,424 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,402 |
