| Biggest Cities in the World | 0 | - | 4.92 | 789,587 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,050 |
| Biggest City by Time Zone | 0 | - | 4.87 | 66,545 |
| Biggest City in Every Country | 0 | - | 4.98 | 98,523 |
| Five Most Populated Cities by Continent | 0 | - | 4.93 | 221,648 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 108,749 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.96 | 129,751 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 78,390 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 83,442 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,359 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 78,474 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 52,981 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,088 |
| Ten Southernmost Megacities | 0 | - | 4.85 | 56,674 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 66,606 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 128,399 |
| Biggest Cities in the United States | 0 | - | 4.93 | 965,544 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,572 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 572,807 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 126,279 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,738 |
| Largest City by Island | 0 | - | 4.87 | 70,976 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,314 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,443 |
| Biggest European Cities by Century | 0 | - | 4.98 | 140,334 |
| Megacities on a World Map | 0 | - | 4.98 | 250,632 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 66,735 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 73,788 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 112,555 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 167,061 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,501 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 122,864 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 166,887 |
| Biggest Cities in Asia | 0 | - | 4.95 | 115,148 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,521 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 341,738 |
| Megacities on an Empty Map | 0 | - | 4.96 | 102,392 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,241 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 40,686 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,257 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,498 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,060 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,324 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 135,487 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 113,703 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,433,927 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,356 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,922 |
| Countries with Megacities | 0 | - | 4.99 | 246,335 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,847 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,762 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,298 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,704 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 58,851 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 101,887 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,659 |
| Biggest City by Region | 0 | - | 4.50 | 35,979 |
| Most Populous 2nd Cities | 0 | - | 4.78 | 56,880 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,174 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,386 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 117,177 |
| Northernmost Major City by Country | 0 | - | 4.56 | 32,998 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,210 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 82,895 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,640 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 40,679 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,365 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,472 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,240 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,751 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,759 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,787 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,419 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,519 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,177 |
| Biggest Cities in Europe | 0 | - | 4.70 | 541,732 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 55,624 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 124,087 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 55,772 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,037 |
| Flag Coloring Book Puzzle #1 | 0 | - | 4.97 | 169,729 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 151,297 |
| Biggest Cities in History | 0 | - | 4.52 | 89,063 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 72,095 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,164 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,164 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.87 | 94,183 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 40,924 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.91 | 96,918 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,015 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 123,435 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 115,905 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 108,531 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 121,832 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 142,073 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 125,932 |
| Countries of Europe by Population | 0 | - | 4.98 | 177,804 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,094 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,637 |
| Demographics Multiple Choice | 0 | - | 4.69 | 42,073 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,095 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,197 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,792 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,317 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,492 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,239 |
| Fastest Growing U.S. Cities | 0 | - | 4.34 | 72,839 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 27,969 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,656 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,459 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,081 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 90,999 |
| Biggest Cities by Trait #2 | 0 | - | 4.46 | 20,181 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.56 | 48,832 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,263 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,352 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,197 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,196 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,541 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,505 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,739 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,135 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,029 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,000 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,766 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 181,859 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 191,724 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 102,923 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 107,773 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,296 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,085 |
| Biggest English Cities by Century | 0 | - | 4.90 | 105,556 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,505 |
| Most Populous Islands | 0 | - | 4.78 | 121,926 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,193 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,398 |
| Countries by Population Decrease | 0 | - | 4.45 | 49,592 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 63,814 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 22,875 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.69 | 107,267 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,454 |
| Five Biggest Cities by Country | 0 | - | 4.70 | 165,576 |
| Biggest Cities Near a Border | 0 | - | 4.21 | 31,733 |
| Flags to Largest Cities | 0 | - | 4.55 | 50,737 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,837 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 221,246 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 161,681 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 104,541 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 86,584 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 125,696 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 127,379 |
| 20 Random Country Flags | 0 | - | 4.99 | 603,791 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.68 | 23,362 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 56,887 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,187 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.61 | 65,297 |
| Largest World Cities With Four Letters | 0 | - | 4.36 | 50,565 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,842 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 84,165 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 43,670 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,593 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 31,867 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.43 | 40,154 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 37,518 |
| Name a Valid European Capital | 0 | - | 4.95 | 150,722 |
| Strongest Nation Brands | 0 | - | 4.50 | 37,314 |
| World Map Without 20 Random Countries | 0 | - | 4.99 | 8,217,883 |
| Boundary Waters | 0 | - | 4.92 | 88,009 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,791 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,201 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 61,170 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 59,785 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.74 | 99,382 |
| Jewish Cities Quiz | 0 | - | 4.34 | 61,629 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.95 | 83,952 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.45 | 72,729 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.41 | 48,441 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 51,210 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.59 | 43,388 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 21,319 |
| Largest Nordic Cities on a Map | 0 | - | 4.77 | 36,744 |
| Cities on Interstate 90 on a Map | 0 | - | 4.45 | 31,909 |
| Biggest Urban Areas in the UK | 0 | - | 4.42 | 175,734 |
| Biggest Cities in Japan | 0 | - | 4.67 | 82,477 |
| Biggest Cities in Russia | 0 | - | 4.49 | 81,987 |
| Biggest Cities in France | 0 | - | 4.69 | 221,876 |
| Biggest Cities in Spain | 0 | - | 4.63 | 169,718 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 55,612 |
| Biggest Cities in Poland | 0 | - | 4.62 | 53,412 |
| Biggest Cities in the UK | 0 | - | 4.48 | 104,083 |
| Biggest Cities in China | 0 | - | 4.53 | 156,872 |
| Biggest Cities in Canada | 0 | - | 4.54 | 131,750 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 46,937 |
| Biggest Cities in India | 0 | - | 4.70 | 67,290 |
| Biggest Cities in Italy | 0 | - | 4.75 | 239,313 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,676,534 |
| Random European Capital to Country | 0 | - | 4.98 | 189,092 |
| Random European Country to Capital | 0 | - | 4.92 | 147,363 |
| Random Asian Country to Capital | 0 | - | 4.92 | 95,300 |
| Random Asian Capital to Country | 0 | - | 4.97 | 101,341 |
