| Biggest Cities in the World | 0 | - | 4.89 | 688,364 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 117,074 |
| Biggest City by Time Zone | 0 | - | 4.84 | 54,539 |
| Biggest City in Every Country | 0 | - | 4.97 | 79,056 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 170,211 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 92,281 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 96,536 |
| Biggest Cities with Exceptions | 0 | - | 4.91 | 65,090 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.86 | 71,640 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.94 | 65,401 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 42,441 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 59,821 |
| Ten Southernmost Megacities | 0 | - | 4.81 | 46,431 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 371,830 |
| Biggest Cities in the United States | 0 | - | 4.93 | 823,428 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 334,465 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 137,382 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.95 | 109,952 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.87 | 109,127 |
| Biggest Cities by Language | 0 | - | 4.95 | 214,153 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.94 | 64,910 |
| Most Populous World Capitals | 0 | - | 4.92 | 148,710 |
| Biggest European Cities by Century | 0 | - | 4.98 | 118,941 |
| Megacities on a World Map | 0 | - | 4.98 | 220,976 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 59,950 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 63,553 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 84,573 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 151,410 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 514,828 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 126,393 |
| Countries with Megacities | 0 | - | 4.99 | 197,688 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 171,933 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 98,183 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 95,735 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 64,153 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 248,391 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 155,058 |
| Biggest Cities in Asia | 0 | - | 4.94 | 96,056 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.91 | 43,543 |
| Megacities on an Empty Map | 0 | - | 4.95 | 87,672 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.93 | 41,827 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,312,788 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 349,904 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.48 | 97,574 |
| Biggest Cities by Trait #1 | 0 | - | 4.45 | 43,101 |
| Biggest City by Region | 0 | - | 4.49 | 33,688 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 53,442 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 63,825 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 67,940 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 199,504 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 109,460 |
| Largest World Capitals with Exceptions | 0 | - | 4.72 | 50,394 |
| Two Largest Cities by First Two Letters | 0 | - | 4.58 | 76,780 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 304,584 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.89 | 97,720 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 47,058 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 66,220 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 245,268 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 109,178 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 97,906 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 70,060 |
| Most Populous Country by First Two Letters | 0 | - | 4.75 | 67,003 |
| Demographics Multiple Choice | 0 | - | 4.66 | 39,824 |
| Biggest Cities in Europe | 0 | - | 4.75 | 465,723 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.94 | 134,169 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.83 | 44,021 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.91 | 92,097 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 69,609 |
| 500 Biggest US Cities | 0 | - | 4.87 | 98,412 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.81 | 52,487 |
| Biggest English-Speaking Cities | 0 | - | 4.42 | 136,302 |
| Fastest Growing U.S. Cities | 0 | - | 4.36 | 70,240 |
| Second Biggest Cities Quiz | 0 | - | 4.25 | 38,996 |
| Biggest City by Island | 0 | - | 4.57 | 45,795 |
| Biggest Cities in History | 0 | - | 4.50 | 80,354 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 68,014 |
| Biggest Coastal City by Country | 0 | - | 4.59 | 27,037 |
| Biggest City by Region #2 | 0 | - | 4.46 | 23,146 |
| Biggest Cities by Latitude | 0 | - | 4.76 | 26,255 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.49 | 40,168 |
| Northernmost Major City by Country | 0 | - | 4.56 | 30,902 |
| Biggest World Cities in 1850 | 0 | - | 4.58 | 64,635 |
| Biggest Cities Starting With A | 0 | - | 4.56 | 112,332 |
| Biggest Cities Starting With D | 0 | - | 4.49 | 106,967 |
| Biggest Cities Starting With H | 0 | - | 4.55 | 97,784 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 110,663 |
| Biggest Cities Starting With M | 0 | - | 4.50 | 129,017 |
| Biggest Cities Starting With P | 0 | - | 4.47 | 114,844 |
| Boundary Waters | 0 | - | 4.93 | 81,186 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 74,922 |
| Countries of Europe by Population | 0 | - | 4.98 | 127,299 |
| Most Populous Countries by Year | 0 | - | 4.81 | 93,883 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 78,809 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 96,779 |
| Countries with the Most People Bordering Them | 0 | - | 4.95 | 75,505 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 93,640 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 70,388 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.88 | 50,990 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 91,182 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.91 | 29,192 |
| Biggest Cities in France - Extreme | 0 | - | 4.89 | 43,935 |
| Biggest Cities in Germany | 0 | - | 4.95 | 263,493 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 205,488 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 109,705 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.86 | 68,687 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 76,215 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.91 | 53,724 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.92 | 67,008 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 87,042 |
| Countries with the Highest Population Density | 0 | - | 4.93 | 143,879 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 145,315 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.82 | 30,173 |
| Most Populous Islands | 0 | - | 4.71 | 112,848 |
| Islands by Largest City #1 | 0 | - | 4.48 | 82,385 |
| Countries by Population Decrease | 0 | - | 4.43 | 46,582 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.55 | 49,730 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.91 | 6,137 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 43,271 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.79 | 68,884 |
| Biggest Mediterranean Cities | 0 | - | 4.57 | 86,629 |
| Biggest Cities in the World - 2100 | 0 | - | 4.29 | 81,341 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.63 | 36,926 |
| Cities of China (With Some Help) | 0 | - | 4.87 | 28,256 |
| Biggest Cities in Sweden | 0 | - | 4.82 | 37,300 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 76,494 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 39,829 |
| Biggest Cities Starting With B | 0 | - | 4.35 | 148,197 |
| Biggest Cities Starting With C | 0 | - | 4.07 | 97,064 |
| Biggest Cities Starting With K | 0 | - | 4.30 | 78,861 |
| Biggest Cities Starting With S | 0 | - | 4.39 | 114,798 |
| Biggest Cities Starting With T | 0 | - | 4.30 | 116,380 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 205,595 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 161,125 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 157,611 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.90 | 80,986 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.91 | 87,745 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 146,364 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 64,527 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 162,213 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,000,543 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 324,619 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.79 | 99,600 |
| Biggest Cities in Latin America Quiz | 0 | - | 4.45 | 60,447 |
| Five Biggest Cities by Country | 0 | - | 4.66 | 152,642 |
| Biggest Cities by Trait #2 | 0 | - | 4.38 | 14,195 |
| Flags to Largest Cities | 0 | - | 4.54 | 32,055 |
| Biggest World Cities A-Z | 0 | - | 4.55 | 194,187 |
| World Geography on a Map #1 | 0 | - | 4.93 | 67,408 |
| Islands by Largest City #2 | 0 | - | 4.72 | 26,825 |
| Countries Losing the Most Population by 2070 | 0 | - | 4.38 | 77,166 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.75 | 93,205 |
| Population Trivia | 0 | - | 4.35 | 26,338 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.89 | 50,831 |
| Biggest English Cities by Century | 0 | - | 4.90 | 99,665 |
| World Capitals Quiz | 0 | - | 5.00 | 4,503,367 |
| Members of the Arab League | 0 | - | 4.85 | 62,356 |
| Sahara Desert Countries | 0 | - | 4.97 | 127,226 |
| Himalayan Countries | 0 | - | 4.94 | 105,069 |
| Andean Countries | 0 | - | 4.91 | 58,305 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 59,260 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 49,454 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 102,810 |
| Coffee Producing Countries | 0 | - | 4.81 | 54,102 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,353 |
| Danube Countries | 0 | - | 4.97 | 56,678 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,723 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,869 |
| Countries with the Best Passports | 0 | - | 4.88 | 71,316 |
| Countries with the Worst Passports | 0 | - | 4.88 | 49,422 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 109,614 |
| European Landlocked Countries | 0 | - | 4.99 | 115,548 |
| Partially Recognized Countries | 0 | - | 4.98 | 89,433 |
| Countries with the Most Species | 0 | - | 4.99 | 89,541 |
| Countries 197 to 205 | 0 | - | 4.89 | 56,402 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,694 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,020 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,331 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,439 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,722 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 49,196 |
| Countries in the Alps | 0 | - | 4.84 | 102,720 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 85,376 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 87,281 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,627 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 78,319 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,030 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,610 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,682 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,178 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,338 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,694 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,471 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,628 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,695 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,551 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,015 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,523 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 98,206 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,375 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 53,424 |
