| Biggest Cities in the World | 0 | - | 4.92 | 790,330 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,112 |
| Biggest City by Time Zone | 0 | - | 4.87 | 66,642 |
| Biggest City in Every Country | 0 | - | 4.98 | 98,669 |
| Five Most Populated Cities by Continent | 0 | - | 4.93 | 221,911 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 108,852 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.96 | 130,028 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 78,486 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 83,515 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 78,576 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 53,052 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,157 |
| Ten Southernmost Megacities | 0 | - | 4.85 | 56,742 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 66,680 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 128,525 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,606 |
| Biggest Cities in the United States | 0 | - | 4.93 | 966,610 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,772 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,606 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 122,975 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 126,455 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,849 |
| Largest City by Island | 0 | - | 4.87 | 71,041 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,392 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,547 |
| Biggest European Cities by Century | 0 | - | 4.98 | 143,430 |
| Megacities on a World Map | 0 | - | 4.98 | 250,939 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 66,795 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 73,864 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 112,739 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 167,146 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,862 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 573,224 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,173 |
| Countries with Megacities | 0 | - | 4.99 | 246,842 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,086 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,950 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,506 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,838 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,035 |
| Biggest Cities in Asia | 0 | - | 4.95 | 115,320 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,562 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 342,023 |
| Megacities on an Empty Map | 0 | - | 4.96 | 102,506 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,295 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,982 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,608 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 58,911 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 101,905 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,703 |
| Biggest City by Region | 0 | - | 4.50 | 35,994 |
| Most Populous 2nd Cities | 0 | - | 4.78 | 56,900 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,534 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,115 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,467 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 135,582 |
| Northernmost Major City by Country | 0 | - | 4.56 | 33,017 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,221 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 82,920 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 113,792 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,255 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,835 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,912 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,876 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,477 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,597 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,258 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,653 |
| Demographics Multiple Choice | 0 | - | 4.69 | 42,086 |
| Biggest Cities in Europe | 0 | - | 4.70 | 542,148 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,270 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,445 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 117,287 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,730 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 40,779 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,497 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,531 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 151,388 |
| Fastest Growing U.S. Cities | 0 | - | 4.34 | 72,861 |
| Biggest Cities in History | 0 | - | 4.52 | 89,126 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 72,119 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 27,978 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,665 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,463 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,184 |
| Biggest Cities by Trait #2 | 0 | - | 4.46 | 20,217 |
| Biggest World Cities in 1850 | 0 | - | 4.62 | 68,197 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 123,501 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 115,960 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 108,595 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 121,903 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 142,172 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 125,990 |
| Boundary Waters | 0 | - | 4.92 | 88,038 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,814 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,278 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 61,289 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 59,832 |
| Countries of Europe by Population | 0 | - | 4.98 | 178,065 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,222 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,138 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,330 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,922 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,401 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,587 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,298 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 55,650 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 124,233 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 55,826 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,264 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,466 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,291 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,266 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,607 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,562 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,809 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,213 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,111 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,093 |
| Most Populous Islands | 0 | - | 4.79 | 121,987 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,201 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,404 |
| Countries by Population Decrease | 0 | - | 4.45 | 49,608 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 63,844 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 22,931 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,109 |
| Biggest Cities Near a Border | 0 | - | 4.21 | 31,748 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,029 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.56 | 48,917 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.87 | 94,297 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,277 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 40,942 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.91 | 97,016 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,062 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,840 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 161,763 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 104,587 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 86,626 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 125,770 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 127,439 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,952 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 181,992 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 191,847 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 102,985 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 107,828 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,396 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,140 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,592 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,915,582 |
| Landlocked Countries | 0 | - | 4.99 | 413,554 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.69 | 107,309 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,476 |
| Five Biggest Cities by Country | 0 | - | 4.70 | 165,658 |
| Flags to Largest Cities | 0 | - | 4.55 | 50,780 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 221,365 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,160 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 94,996 |
| Countries Losing the Most Population by 2070 | 0 | - | 4.40 | 84,128 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.74 | 99,454 |
| Population Trivia | 0 | - | 4.32 | 27,423 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 56,949 |
| Biggest English Cities by Century | 0 | - | 4.90 | 105,594 |
| Largest World Cities With Four Letters | 0 | - | 4.36 | 50,653 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 31,880 |
| World Capitals Quiz | 0 | - | 5.00 | 5,031,097 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,563 |
| Himalayan Countries | 0 | - | 4.95 | 135,335 |
| Andean Countries | 0 | - | 4.94 | 82,813 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,206 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,192 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,887 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,594 |
| Danube Countries | 0 | - | 4.97 | 71,073 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,754 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,531 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,460 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,380 |
| European Landlocked Countries | 0 | - | 4.99 | 145,744 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,197 |
| Countries with the Most Species | 0 | - | 4.99 | 95,238 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,331 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,197 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,366 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,954 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,571 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,949 |
| Countries in the Alps | 0 | - | 4.86 | 116,816 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,555 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,248 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,000 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,413 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,154 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,996 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,570 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,743 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,269 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,044 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,193 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,040 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,449 |
