| Biggest Cities in the World | 0 | - | 4.91 | 801,494 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,104 |
| Biggest City by Time Zone | 0 | - | 4.88 | 68,380 |
| Biggest City in Every Country | 0 | - | 4.98 | 101,191 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 226,103 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 110,847 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 144,321 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 80,257 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 84,848 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 80,415 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 60,231 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 70,346 |
| Ten Southernmost Megacities | 0 | - | 4.87 | 64,879 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 67,970 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 131,251 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 418,981 |
| Biggest Cities in the United States | 0 | - | 4.94 | 981,660 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,905 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,474 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 124,488 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 129,120 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,062 |
| Largest City by Island | 0 | - | 4.87 | 72,105 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,200 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,264 |
| Biggest European Cities by Century | 0 | - | 4.99 | 145,826 |
| Megacities on a World Map | 0 | - | 4.98 | 255,495 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 579,711 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,540 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 75,234 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 115,328 |
| Biggest City in Each U.S. State | 0 | - | 4.87 | 168,775 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,244 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,407 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,953 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,600 |
| Biggest Cities in Asia | 0 | - | 4.95 | 117,438 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 50,237 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 346,962 |
| Megacities on an Empty Map | 0 | - | 4.97 | 118,781 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 51,226 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,023 |
| Countries with Megacities | 0 | - | 4.99 | 264,879 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,858 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,542 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,122 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,620 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,944 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,157 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.84 | 69,031 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,658 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,924 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 137,157 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 115,780 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 59,779 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,576 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 56,056 |
| Biggest City by Region | 0 | - | 4.50 | 36,294 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,207 |
| Northernmost Major City by Country | 0 | - | 4.57 | 33,234 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 52,386 |
| Two Largest Cities by First Two Letters | 0 | - | 4.52 | 83,373 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,470 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,989 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,302 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,226 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,605 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,782 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,260 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 159,594 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,599 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 118,785 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 83,280 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 42,089 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 117,531 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,533 |
| Biggest Cities in Europe | 0 | - | 4.73 | 547,411 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,915 |
| Demographics Multiple Choice | 0 | - | 4.70 | 42,310 |
| Biggest English-Speaking Cities | 0 | - | 4.44 | 165,033 |
| Fastest Growing U.S. Cities | 0 | - | 4.35 | 73,095 |
| Biggest Cities in History | 0 | - | 4.52 | 90,330 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 78,285 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 28,098 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,858 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,576 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 56,324 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 126,638 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,496 |
| Biggest Cities by Trait #2 | 0 | - | 4.47 | 20,740 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 57,018 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,554 |
| Biggest Cities in the Blue Banana | 0 | - | 4.57 | 36,508 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,125 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,654 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 124,577 |
| Biggest Cities Starting With D | 0 | - | 4.52 | 116,820 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 109,618 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 123,218 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 143,654 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 127,340 |
| Countries of Europe by Population | 0 | - | 4.98 | 181,620 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,915 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,723 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 130,780 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,202 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,364 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,529 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 93,008 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,286 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,548 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,324 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,946 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,357 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,662 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,437 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,594 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,377 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.70 | 67,044 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 96,619 |
| All Cities in China with Population of 1 Million | 0 | - | 4.82 | 46,271 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,297 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 99,264 |
| All Cities in India with Population of 1 Million | 0 | - | 4.84 | 47,685 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 41,826 |
| Every 100k+ City in the United States on a Map | 0 | - | 4.97 | 114,747 |
| Boundary Waters | 0 | - | 4.92 | 88,600 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.86 | 35,271 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,324 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,795 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,660 |
| Most Populous Islands | 0 | - | 4.80 | 123,081 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,328 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,577 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,424 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.97 | 184,303 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 193,736 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 104,394 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,884 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,601 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 159,567 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,331 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 74,188 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 23,547 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 32,011 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,951 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 163,012 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 105,474 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 87,246 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 126,979 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 128,490 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,942 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.68 | 23,741 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.64 | 107,923 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,836 |
| Biggest English Cities by Century | 0 | - | 4.90 | 106,510 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 166,879 |
| Flags to Largest Cities | 0 | - | 4.54 | 51,546 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 223,477 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,620,156 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.77 | 115,871 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,615 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,802 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,515 |
| Largest World Cities With Four Letters | 0 | - | 4.39 | 64,184 |
| Biggest Cities Once in the Roman Empire | 0 | - | 4.81 | 75,826 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 47,032 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.43 | 90,756 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 44,065 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,901 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 32,063 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 40,451 |
| Most Populous U.S. Cities as a Percent of Their State | 0 | - | 4.78 | 55,268 |
| Cities in European Economic Areas on a Map | 0 | - | 4.70 | 17,831 |
| Biggest Cities in Australia on a Map | 0 | - | 4.62 | 38,031 |
| Landlocked Countries | 0 | - | 4.99 | 422,449 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,730 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,064 |
| Countries Losing the Most Population by 2070 | 0 | - | 4.40 | 84,609 |
| Population Trivia | 0 | - | 4.32 | 27,524 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 21,502 |
| World Capitals Quiz | 0 | - | 5.00 | 5,086,174 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,756 |
| Himalayan Countries | 0 | - | 4.95 | 138,955 |
| Andean Countries | 0 | - | 4.93 | 84,750 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,958 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,030 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,569 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,902 |
| Danube Countries | 0 | - | 4.97 | 72,079 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,097 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,477 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,419 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,898 |
| European Landlocked Countries | 0 | - | 4.99 | 147,205 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,738 |
| Countries with the Most Species | 0 | - | 4.99 | 103,287 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,856 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,625 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,742 |
