| Biggest Cities in the World | 0 | - | 4.91 | 799,989 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,972 |
| Biggest City by Time Zone | 0 | - | 4.88 | 68,157 |
| Biggest City in Every Country | 0 | - | 4.98 | 100,855 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 225,561 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 110,582 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 134,413 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 80,004 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 84,673 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 80,126 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 60,013 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 70,194 |
| Ten Southernmost Megacities | 0 | - | 4.87 | 64,713 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 67,785 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 130,788 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 418,294 |
| Biggest Cities in the United States | 0 | - | 4.94 | 979,820 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,499 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,306 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,308 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 128,900 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,770 |
| Largest City by Island | 0 | - | 4.87 | 71,976 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,082 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,089 |
| Biggest European Cities by Century | 0 | - | 4.99 | 145,657 |
| Megacities on a World Map | 0 | - | 4.98 | 254,997 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 578,861 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,442 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 75,075 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 114,951 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 168,558 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,115 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,017 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,407 |
| Biggest Cities in Asia | 0 | - | 4.95 | 117,194 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.93 | 50,164 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 346,258 |
| Megacities on an Empty Map | 0 | - | 4.97 | 118,566 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 51,110 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,721 |
| Countries with Megacities | 0 | - | 4.99 | 264,143 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,565 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,383 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,827 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,439 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,447,066 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,704 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,961 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,584 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,595 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 136,967 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 115,555 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 59,662 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,543 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 56,021 |
| Biggest City by Region | 0 | - | 4.50 | 36,256 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,172 |
| Northernmost Major City by Country | 0 | - | 4.56 | 33,212 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 52,366 |
| Two Largest Cities by First Two Letters | 0 | - | 4.52 | 83,327 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,436 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,825 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,029 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,019 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,492 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,642 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,160 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 159,445 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,435 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 118,592 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 82,548 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 41,944 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 117,272 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,388 |
| Biggest Cities in Europe | 0 | - | 4.73 | 546,831 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,889 |
| Demographics Multiple Choice | 0 | - | 4.70 | 42,278 |
| Biggest English-Speaking Cities | 0 | - | 4.44 | 162,979 |
| Fastest Growing U.S. Cities | 0 | - | 4.35 | 73,070 |
| Biggest Cities in History | 0 | - | 4.52 | 90,239 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 77,781 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 28,085 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,836 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,563 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 56,252 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 126,342 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,450 |
| Biggest Cities by Trait #2 | 0 | - | 4.47 | 20,672 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 56,871 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,504 |
| Biggest Cities in the Blue Banana | 0 | - | 4.57 | 36,440 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,766 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 124,453 |
| Biggest Cities Starting With D | 0 | - | 4.52 | 116,720 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 109,509 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 123,079 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 143,513 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 127,207 |
| Countries of Europe by Population | 0 | - | 4.98 | 181,163 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,769 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,665 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 130,586 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,025 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,259 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,428 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,941 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,412 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,259 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,840 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,294 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,600 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,340 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,080 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,243 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,535 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,331 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.70 | 66,547 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 96,288 |
| All Cities in China with Population of 1 Million | 0 | - | 4.82 | 46,153 |
| Cities of China (With Some Help) | 0 | - | 4.90 | 31,605 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,242 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 98,972 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,604 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 41,679 |
| Every 100k+ City in the United States on a Map | 0 | - | 4.97 | 114,449 |
| Boundary Waters | 0 | - | 4.92 | 88,516 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.86 | 35,216 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,190 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,592 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,534 |
| Most Populous Islands | 0 | - | 4.80 | 122,982 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,314 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,550 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,114 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.97 | 184,036 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 193,503 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 104,231 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,855 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,501 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 159,409 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,265 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 74,060 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 23,481 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 31,977 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,940 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 162,873 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 105,381 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 87,172 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 126,694 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 128,365 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,845 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.68 | 23,700 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.70 | 107,838 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,780 |
| Biggest English Cities by Century | 0 | - | 4.90 | 106,407 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 166,717 |
| Flags to Largest Cities | 0 | - | 4.54 | 51,463 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 223,218 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,529,032 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.77 | 115,776 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,517 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,722 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,491 |
| Largest World Cities With Four Letters | 0 | - | 4.39 | 63,976 |
| Biggest Cities Once in the Roman Empire | 0 | - | 4.81 | 75,372 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 47,002 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.43 | 89,881 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 44,025 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,870 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 32,043 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 40,430 |
| Cities in European Economic Areas on a Map | 0 | - | 4.70 | 17,722 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 37,964 |
| Landlocked Countries | 0 | - | 4.99 | 421,303 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,669 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,948 |
| Countries Losing the Most Population by 2070 | 0 | - | 4.40 | 84,551 |
| Population Trivia | 0 | - | 4.32 | 27,504 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 21,478 |
| World Capitals Quiz | 0 | - | 5.00 | 5,079,264 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,122 |
| Himalayan Countries | 0 | - | 4.95 | 138,420 |
| Andean Countries | 0 | - | 4.93 | 84,432 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,645 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,597 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,276 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,675 |
| Danube Countries | 0 | - | 4.97 | 71,929 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,912 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,344 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,157 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,614 |
| European Landlocked Countries | 0 | - | 4.99 | 147,058 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,506 |
| Countries with the Most Species | 0 | - | 4.99 | 103,167 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,659 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,546 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,689 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,493 |
