| Biggest Cities in the World | 0 | - | 4.92 | 789,165 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,029 |
| Biggest City by Time Zone | 0 | - | 4.87 | 66,443 |
| Biggest City in Every Country | 0 | - | 4.98 | 98,399 |
| Five Most Populated Cities by Continent | 0 | - | 4.93 | 221,480 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 108,645 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.96 | 129,575 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 78,316 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 83,379 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 78,397 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 52,936 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,052 |
| Ten Southernmost Megacities | 0 | - | 4.85 | 56,629 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 66,548 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 128,247 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,205 |
| Biggest Cities in the United States | 0 | - | 4.93 | 964,961 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,457 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,458 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 122,837 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,085 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,155 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,747 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,282 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,464 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 126,195 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,672 |
| Largest City by Island | 0 | - | 4.87 | 70,938 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,212 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,392 |
| Biggest European Cities by Century | 0 | - | 4.98 | 131,525 |
| Megacities on a World Map | 0 | - | 4.98 | 250,206 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 572,551 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 66,709 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 73,739 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 112,462 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 166,982 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 322,998 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 22,853 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 166,705 |
| Biggest Cities in Asia | 0 | - | 4.95 | 115,074 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,506 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 341,586 |
| Megacities on an Empty Map | 0 | - | 4.96 | 102,324 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,209 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,855 |
| Countries with Megacities | 0 | - | 4.99 | 246,168 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,776 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,731 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,239 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,665 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,433,447 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,029 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,814 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,476 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,034 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,262 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 135,447 |
| Biggest Cities Near a Border | 0 | - | 4.21 | 31,721 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 113,650 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 58,830 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 101,880 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,644 |
| Biggest City by Region | 0 | - | 4.50 | 35,964 |
| Most Populous 2nd Cities | 0 | - | 4.78 | 56,863 |
| Northernmost Major City by Country | 0 | - | 4.56 | 32,995 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,200 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 82,884 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,230 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,720 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,684 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,744 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,395 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,484 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,143 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,123 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,361 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 117,132 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,601 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 40,614 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,300 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,438 |
| Biggest Cities in Europe | 0 | - | 4.70 | 541,517 |
| Countries with the Most Borders | 0 | - | 4.97 | 385,137 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,627 |
| Demographics Multiple Choice | 0 | - | 4.69 | 42,068 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 151,270 |
| Fastest Growing U.S. Cities | 0 | - | 4.34 | 72,826 |
| Biggest Cities in History | 0 | - | 4.52 | 89,037 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 72,048 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 27,963 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,649 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,454 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 55,603 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 124,015 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,152 |
| Biggest Cities by Trait #2 | 0 | - | 4.46 | 20,167 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 55,740 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,143 |
| Biggest Cities in the Blue Banana | 0 | - | 4.56 | 35,949 |
| Biggest Cities in Germany | 0 | - | 4.95 | 290,942 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 123,378 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 115,859 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 108,317 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 121,779 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 142,020 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 125,887 |
| Countries of Europe by Population | 0 | - | 4.98 | 177,680 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,033 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,221 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,291 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,142 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,179 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,499 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,478 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,712 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,089 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 163,986 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 168,954 |
| Countries with the Shortest Total Borders | 0 | - | 4.94 | 102,992 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 179,252 |
| Monarchies Bordering Monarchies | 0 | - | 4.85 | 59,924 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,066 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 90,983 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.56 | 48,801 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.87 | 94,141 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,253 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 40,915 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.91 | 96,863 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 46,999 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 40,642 |
| Every 100k+ City in the United States on a Map | 0 | - | 4.97 | 112,287 |
| Boundary Waters | 0 | - | 4.92 | 87,990 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,787 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,173 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 61,126 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 59,760 |
| Most Populous Islands | 0 | - | 4.78 | 121,905 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,190 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,390 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,701 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 181,800 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 191,680 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 102,892 |
| Countries by Population Decrease | 0 | - | 4.45 | 49,585 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 107,761 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,254 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 63,797 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,046 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,829 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 161,608 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 104,495 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 86,544 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 125,654 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 127,334 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,457 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 225,143 |
| European Countries with One Border | 0 | - | 4.97 | 181,445 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 177,965 |
| Random Countries by Borders | 0 | - | 4.99 | 81,573 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,831 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.68 | 23,357 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.69 | 107,250 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,440 |
| Biggest English Cities by Century | 0 | - | 4.90 | 105,524 |
| Five Biggest Cities by Country | 0 | - | 4.70 | 165,531 |
| Flags to Largest Cities | 0 | - | 4.55 | 50,706 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 221,173 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,850,118 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.74 | 99,368 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 56,867 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,170 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.61 | 65,291 |
| Largest World Cities With Four Letters | 0 | - | 4.36 | 50,530 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,836 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 84,125 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 43,660 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,584 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 31,863 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.43 | 40,143 |
| Most Populous U.S. Cities as a Percent of Their State | 0 | - | 4.78 | 54,834 |
| Cities in European Economic Areas on a Map | 0 | - | 4.64 | 16,858 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 37,511 |
| Landlocked Countries | 0 | - | 4.99 | 412,863 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 124,832 |
| Richest Countries Bordering Each Other | 0 | - | 4.99 | 153,131 |
| Countries Bordering the Mediterranean - Map Quiz | 0 | - | 4.86 | 88,417 |
| Rich Countries Bordering Poor Countries | 0 | - | 4.89 | 99,333 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 377,929 |
| Bordering Countries with the Largest GDPs | 0 | - | 4.97 | 76,046 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,104 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 94,900 |
| Countries Losing the Most Population by 2070 | 0 | - | 4.40 | 84,074 |
| Population Trivia | 0 | - | 4.32 | 27,409 |
| Most Populated Countries Bordering the Indian Ocean | 0 | - | 4.27 | 28,092 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 21,312 |
| World Capitals Quiz | 0 | - | 5.00 | 5,025,473 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,225 |
| Himalayan Countries | 0 | - | 4.95 | 135,046 |
| Andean Countries | 0 | - | 4.94 | 82,659 |
