| Biggest Cities in the World | 0 | - | 4.91 | 807,540 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,615 |
| Biggest City by Time Zone | 0 | - | 4.88 | 69,162 |
| Biggest City in Every Country | 0 | - | 4.98 | 102,290 |
| Biggest Cities by Latitude Range | 0 | - | 4.81 | 33,023 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 228,008 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 111,765 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 150,805 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 81,017 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 85,439 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 81,158 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 60,754 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.92 | 70,895 |
| Ten Southernmost Megacities | 0 | - | 4.84 | 65,353 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 68,614 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 132,866 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 421,392 |
| Biggest Cities in the United States | 0 | - | 4.94 | 989,855 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 368,674 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 167,234 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 125,258 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 129,839 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,935 |
| Largest City by Island | 0 | - | 4.87 | 72,611 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,532 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,934 |
| Biggest European Cities by Century | 0 | - | 4.99 | 146,300 |
| Megacities on a World Map | 0 | - | 4.98 | 257,652 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,881 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 75,886 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 116,910 |
| Biggest City in Each U.S. State | 0 | - | 4.87 | 169,927 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 337,047 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 583,533 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,655 |
| Countries with Megacities | 0 | - | 4.99 | 268,179 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,296 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,411 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,637 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,524 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 169,391 |
| Biggest Cities in Asia | 0 | - | 4.95 | 118,443 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 50,505 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 349,605 |
| Megacities on an Empty Map | 0 | - | 4.97 | 119,413 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 51,656 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,836 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,205 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 60,237 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,691 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 56,189 |
| Biggest City by Region | 0 | - | 4.50 | 36,430 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,388 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.84 | 69,387 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 74,051 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 226,218 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 137,995 |
| Northernmost Major City by Country | 0 | - | 4.57 | 33,334 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 52,466 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 83,638 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.90 | 116,792 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,611 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,510 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,624 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,891 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 113,275 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 94,426 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,764 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 71,072 |
| Demographics Multiple Choice | 0 | - | 4.70 | 42,427 |
| Biggest Cities in Europe | 0 | - | 4.70 | 549,988 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 160,292 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 48,244 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 119,615 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 85,073 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 42,667 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 118,533 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 63,086 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 166,106 |
| Fastest Growing U.S. Cities | 0 | - | 4.35 | 73,209 |
| Biggest Cities in History | 0 | - | 4.52 | 90,740 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 79,260 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 28,157 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,939 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.54 | 43,660 |
| Biggest Cities by Trait #2 | 0 | - | 4.47 | 20,991 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,751 |
| Biggest Cities Starting With A | 0 | - | 4.63 | 125,328 |
| Biggest Cities Starting With D | 0 | - | 4.52 | 117,305 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 110,139 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 123,763 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 144,513 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 127,941 |
| Boundary Waters | 0 | - | 4.92 | 88,872 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.88 | 35,493 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,903 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,641 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 61,105 |
| Countries of Europe by Population | 0 | - | 4.98 | 183,811 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,731 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 96,002 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 131,652 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,925 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,941 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 91,106 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 93,293 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 56,631 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 127,907 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 57,650 |
| Biggest Cities in Germany | 0 | - | 4.95 | 295,787 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,846 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 224,117 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 136,070 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,645 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,321 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,593 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,956 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,913 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 165,888 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 171,467 |
| Most Populous Islands | 0 | - | 4.80 | 123,477 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,412 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,690 |
| Countries by Population Decrease | 0 | - | 4.46 | 50,038 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,560 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.86 | 23,951 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,855 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 32,128 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,561 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.70 | 68,780 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.89 | 97,798 |
| All Cities in China with Population of 1 Million | 0 | - | 4.82 | 46,753 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,533 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 100,475 |
| All Cities in India with Population of 1 Million | 0 | - | 4.84 | 48,123 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.31 | 41,010 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 164,007 |
| Biggest Cities Starting With C | 0 | - | 4.12 | 105,933 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 87,624 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 127,535 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 128,993 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.69 | 23,906 |
| Highest Fertility Countries | 0 | - | 4.90 | 27,337 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 235,046 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.97 | 185,558 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 195,419 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 105,152 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 109,008 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.98 | 160,162 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 74,761 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,417 |
| Countries of the World Quiz | 0 | - | 5.00 | 48,007,170 |
| Landlocked Countries | 0 | - | 4.99 | 427,712 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.64 | 108,239 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 65,045 |
| Five Biggest Cities by Country | 0 | - | 4.70 | 167,533 |
| Flags to Largest Cities | 0 | - | 4.54 | 51,963 |
| Biggest World Cities A-Z | 0 | - | 4.61 | 224,487 |
| World Geography on a Map #1 | 0 | - | 4.94 | 74,019 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,566 |
| Countries Losing the Most Population by 2070 | 0 | - | 4.40 | 84,836 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.77 | 116,289 |
| Population Trivia | 0 | - | 4.32 | 27,601 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,896 |
| Biggest English Cities by Century | 0 | - | 4.91 | 107,124 |
| Largest World Cities With Four Letters | 0 | - | 4.39 | 64,674 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 32,152 |
| World Capitals Quiz | 0 | - | 5.00 | 5,117,091 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,134 |
| Himalayan Countries | 0 | - | 4.93 | 141,022 |
| Andean Countries | 0 | - | 4.94 | 85,900 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 65,011 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,632 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,555 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,763 |
| Danube Countries | 0 | - | 4.97 | 72,608 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,874 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,021 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,530 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 151,014 |
| European Landlocked Countries | 0 | - | 4.99 | 147,821 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,606 |
| Countries with the Most Species | 0 | - | 4.99 | 103,672 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,712 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,833 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,975 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,963 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,709 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,176 |
| Countries in the Alps | 0 | - | 4.87 | 119,050 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,127 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,257 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,091 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,220 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,192 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,425 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,644 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,034 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,539 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,351 |
