| Biggest Cities in the World | 0 | - | 4.91 | 805,058 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,395 |
| Biggest City by Time Zone | 0 | - | 4.88 | 68,887 |
| Biggest City in Every Country | 0 | - | 4.98 | 101,871 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 227,245 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 111,395 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 149,761 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 80,724 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 85,207 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 80,910 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 60,582 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.92 | 70,660 |
| Ten Southernmost Megacities | 0 | - | 4.88 | 65,175 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 68,352 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 132,197 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 420,422 |
| Biggest Cities in the United States | 0 | - | 4.94 | 986,365 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,897 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,912 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,939 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,886 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 131,278 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,609 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,714 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,847 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 129,521 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,584 |
| Largest City by Island | 0 | - | 4.87 | 72,406 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,396 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,638 |
| Biggest European Cities by Century | 0 | - | 4.99 | 146,108 |
| Megacities on a World Map | 0 | - | 4.98 | 256,728 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 581,684 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,739 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 75,613 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 116,144 |
| Biggest City in Each U.S. State | 0 | - | 4.87 | 169,602 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,020 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.86 | 23,780 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,946 |
| Biggest Cities in Asia | 0 | - | 4.95 | 118,074 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 50,398 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 348,461 |
| Megacities on an Empty Map | 0 | - | 4.97 | 119,141 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 51,483 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,011 |
| Countries with Megacities | 0 | - | 4.99 | 266,846 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,730 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,036 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,045 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,164 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,453,395 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,305 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,662 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.84 | 69,288 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,956 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,643 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 137,650 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 32,086 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 116,379 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 60,059 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,642 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 56,140 |
| Biggest City by Region | 0 | - | 4.50 | 36,385 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,321 |
| Biggest Cities by Latitude Range | 0 | - | 4.81 | 32,659 |
| Northernmost Major City by Country | 0 | - | 4.57 | 33,300 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 52,434 |
| Two Largest Cities by First Two Letters | 0 | - | 4.52 | 83,534 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,560 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,284 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,945 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,610 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,866 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,172 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,564 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 160,018 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,981 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 119,232 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 84,473 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 42,406 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 118,099 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,870 |
| Biggest Cities in Europe | 0 | - | 4.73 | 548,923 |
| Countries with the Most Borders | 0 | - | 4.97 | 390,412 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 71,006 |
| Demographics Multiple Choice | 0 | - | 4.70 | 42,378 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 165,782 |
| Fastest Growing U.S. Cities | 0 | - | 4.35 | 73,172 |
| Biggest Cities in History | 0 | - | 4.52 | 90,558 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 78,933 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 28,135 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,910 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 56,498 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 127,362 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.54 | 43,600 |
| Biggest Cities by Trait #2 | 0 | - | 4.47 | 20,886 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 57,380 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,683 |
| Biggest Cities in the Blue Banana | 0 | - | 4.57 | 36,652 |
| Biggest Cities in Germany | 0 | - | 4.95 | 295,084 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,765 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 125,112 |
| Biggest Cities Starting With D | 0 | - | 4.52 | 117,143 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 109,931 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 123,540 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 144,044 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 127,690 |
| Countries of Europe by Population | 0 | - | 4.98 | 182,788 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,342 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 93,179 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,745 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,842 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,492 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,166 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,493 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,841 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,727 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,601 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,864 |
| Countries with the Shortest Total Borders | 0 | - | 4.94 | 104,383 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 181,210 |
| Monarchies Bordering Monarchies | 0 | - | 4.81 | 60,565 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,747 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,471 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.70 | 68,134 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.89 | 97,279 |
| All Cities in China with Population of 1 Million | 0 | - | 4.82 | 46,524 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,434 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 99,955 |
| All Cities in India with Population of 1 Million | 0 | - | 4.84 | 47,983 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 42,205 |
| Every 100k+ City in the United States on a Map | 0 | - | 4.97 | 117,886 |
| Boundary Waters | 0 | - | 4.92 | 88,744 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.87 | 35,397 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,650 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,276 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,925 |
| "Second Best" Geography Edition #3 | 0 | - | 4.89 | 70,921 |
| Most Populous Islands | 0 | - | 4.80 | 123,282 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,378 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,639 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 234,306 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.97 | 184,936 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 194,627 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 104,821 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,970 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,811 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.98 | 159,941 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,467 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 74,521 |
| Colour in the Flag Map by Guessing Cities | 0 | - | 4.92 | 65,004 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.31 | 40,985 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 163,760 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 105,778 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 87,477 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 127,310 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 128,801 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,205 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.83 | 227,836 |
| European Countries with One Border | 0 | - | 4.97 | 183,703 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,460 |
| Random Countries by Borders | 0 | - | 4.99 | 83,038 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,856 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.68 | 23,819 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.64 | 108,122 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,961 |
| Biggest English Cities by Century | 0 | - | 4.91 | 106,979 |
| Five Biggest Cities by Country | 0 | - | 4.70 | 167,275 |
| Flags to Largest Cities | 0 | - | 4.54 | 51,790 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 224,073 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,841,968 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.77 | 116,098 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,770 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 127,032 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,568 |
| Largest World Cities With Four Letters | 0 | - | 4.39 | 64,494 |
| Biggest Cities Once in the Roman Empire | 0 | - | 4.81 | 76,109 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 47,076 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.43 | 92,105 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 44,156 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,995 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 32,108 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 40,524 |
| Most Populous U.S. Cities as a Percent of Their State | 0 | - | 4.78 | 55,399 |
| Cities in European Economic Areas on a Map | 0 | - | 4.70 | 18,095 |
| Biggest Cities in Australia on a Map | 0 | - | 4.62 | 38,166 |
| Landlocked Countries | 0 | - | 4.99 | 425,177 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 586,907 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,582 |
| Richest Countries Bordering Each Other | 0 | - | 4.99 | 154,825 |
| Countries Bordering the Mediterranean - Map Quiz | 0 | - | 4.86 | 89,428 |
| Rich Countries Bordering Poor Countries | 0 | - | 4.89 | 100,562 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 387,404 |
| Bordering Countries with the Largest GDPs | 0 | - | 4.97 | 76,658 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,902 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,365 |
| Countries Losing the Most Population by 2070 | 0 | - | 4.40 | 84,742 |
| Population Trivia | 0 | - | 4.32 | 27,559 |
| Most Populated Countries Bordering the Indian Ocean | 0 | - | 4.27 | 28,217 |
