| Biggest Cities in the World | 0 | - | 4.92 | 789,117 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,025 |
| Biggest City by Time Zone | 0 | - | 4.87 | 66,433 |
| Biggest City in Every Country | 0 | - | 4.98 | 98,384 |
| Five Most Populated Cities by Continent | 0 | - | 4.93 | 221,458 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 108,630 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.96 | 129,555 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 78,303 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 83,371 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 78,383 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 52,930 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,043 |
| Ten Southernmost Megacities | 0 | - | 4.85 | 56,625 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 66,543 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 128,230 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,192 |
| Biggest Cities in the United States | 0 | - | 4.93 | 964,921 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,448 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,455 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 122,835 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,081 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,147 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,744 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,277 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,462 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 126,185 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,669 |
| Largest City by Island | 0 | - | 4.87 | 70,932 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,194 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,383 |
| Biggest European Cities by Century | 0 | - | 4.98 | 129,987 |
| Megacities on a World Map | 0 | - | 4.98 | 250,139 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 572,526 |
| 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 | 73,734 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 112,454 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 166,974 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 322,972 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 22,849 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 166,683 |
| Biggest Cities in Asia | 0 | - | 4.95 | 115,067 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,501 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 341,561 |
| Megacities on an Empty Map | 0 | - | 4.96 | 102,318 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,207 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,851 |
| Countries with Megacities | 0 | - | 4.99 | 246,145 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,769 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,727 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,235 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,663 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,433,400 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 376,993 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,803 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,470 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,033 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,251 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 135,440 |
| Biggest Cities Near a Border | 0 | - | 4.21 | 31,720 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 113,643 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 58,827 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 101,879 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,641 |
| Biggest City by Region | 0 | - | 4.50 | 35,964 |
| Most Populous 2nd Cities | 0 | - | 4.78 | 56,862 |
| 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 | 82,879 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,230 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,715 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,665 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,742 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,391 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,479 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,142 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,121 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,358 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 117,121 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,598 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 40,611 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,294 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,435 |
| Biggest Cities in Europe | 0 | - | 4.70 | 541,500 |
| Countries with the Most Borders | 0 | - | 4.97 | 385,129 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,626 |
| Demographics Multiple Choice | 0 | - | 4.69 | 42,067 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 151,266 |
| Fastest Growing U.S. Cities | 0 | - | 4.34 | 72,826 |
| Biggest Cities in History | 0 | - | 4.52 | 89,035 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 72,044 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 27,962 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,648 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,454 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 55,601 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 124,002 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,152 |
| Biggest Cities by Trait #2 | 0 | - | 4.46 | 20,165 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 55,735 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,142 |
| Biggest Cities in the Blue Banana | 0 | - | 4.56 | 35,948 |
| Biggest Cities in Germany | 0 | - | 4.95 | 290,929 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 123,371 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 115,854 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 108,291 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 121,774 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 142,013 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 125,882 |
| Countries of Europe by Population | 0 | - | 4.98 | 177,665 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,027 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,218 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,286 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,136 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,174 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,498 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,476 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,709 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,087 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 163,985 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 168,952 |
| Countries with the Shortest Total Borders | 0 | - | 4.94 | 102,991 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 179,249 |
| Monarchies Bordering Monarchies | 0 | - | 4.85 | 59,920 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,064 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 90,981 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.56 | 48,792 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.87 | 94,137 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,251 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 40,914 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.91 | 96,854 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 46,994 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 40,641 |
| Every 100k+ City in the United States on a Map | 0 | - | 4.97 | 112,276 |
| Boundary Waters | 0 | - | 4.92 | 87,990 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,786 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,166 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 61,122 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 59,755 |
| Most Populous Islands | 0 | - | 4.78 | 121,901 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,188 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,387 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,690 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 181,795 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 191,670 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 102,889 |
| Countries by Population Decrease | 0 | - | 4.45 | 49,585 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 107,758 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,247 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 63,796 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,045 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,829 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 161,596 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 104,489 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 86,540 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 125,648 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 127,332 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,456 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 225,139 |
| European Countries with One Border | 0 | - | 4.97 | 181,443 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 177,959 |
| Random Countries by Borders | 0 | - | 4.99 | 81,572 |
| U.S. State Border Crossings | 0 | - | 4.97 | 95,827 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.68 | 23,355 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.69 | 107,246 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,439 |
| Biggest English Cities by Century | 0 | - | 4.90 | 105,523 |
| Five Biggest Cities by Country | 0 | - | 4.70 | 165,525 |
| Flags to Largest Cities | 0 | - | 4.55 | 50,700 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 221,167 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,847,749 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.74 | 99,367 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 56,865 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,169 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.61 | 65,291 |
| Largest World Cities With Four Letters | 0 | - | 4.36 | 50,519 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,835 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 84,123 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 43,659 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,582 |
| 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 | 16,852 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 37,511 |
| Landlocked Countries | 0 | - | 4.99 | 412,840 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 124,831 |
| Richest Countries Bordering Each Other | 0 | - | 4.99 | 153,123 |
| Countries Bordering the Mediterranean - Map Quiz | 0 | - | 4.86 | 88,414 |
| Rich Countries Bordering Poor Countries | 0 | - | 4.89 | 99,329 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 377,923 |
| Bordering Countries with the Largest GDPs | 0 | - | 4.97 | 76,046 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,102 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 94,895 |
| Countries Losing the Most Population by 2070 | 0 | - | 4.40 | 84,071 |
| Population Trivia | 0 | - | 4.32 | 27,409 |
| Most Populated Countries Bordering the Indian Ocean | 0 | - | 4.27 | 28,091 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 21,312 |
| World Capitals Quiz | 0 | - | 5.00 | 5,025,206 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,218 |
| Himalayan Countries | 0 | - | 4.95 | 135,041 |
| Andean Countries | 0 | - | 4.94 | 82,654 |
