| Biggest Cities in the World | 0 | - | 4.91 | 802,082 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,134 |
| Biggest City by Time Zone | 0 | - | 4.88 | 68,466 |
| Biggest City in Every Country | 0 | - | 4.98 | 101,312 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 226,271 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 110,927 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 146,510 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 80,328 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 84,903 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 80,499 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 60,286 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 70,386 |
| Ten Southernmost Megacities | 0 | - | 4.87 | 64,914 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 68,022 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 131,428 |
| 5 Most Populous Cities in Each Country With a Map | 0 | - | 4.96 | 39,769 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 419,189 |
| Biggest Cities in the United States | 0 | - | 4.94 | 982,153 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,018 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,522 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,539 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 129,190 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,142 |
| Largest City by Island | 0 | - | 4.87 | 72,138 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,237 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,320 |
| Biggest European Cities by Century | 0 | - | 4.99 | 145,855 |
| Megacities on a World Map | 0 | - | 4.98 | 255,657 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 579,968 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,569 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 75,290 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 115,432 |
| 500 Biggest Cities in the World on a Map | 0 | - | 4.97 | 123,200 |
| Three Biggest Cities by Time Zone With Map | 0 | - | 4.98 | 35,037 |
| Biggest City in Each U.S. State | 0 | - | 4.87 | 168,837 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,343 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,653 |
| Biggest Cities in Asia | 0 | - | 4.95 | 117,499 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 50,259 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 347,165 |
| Megacities on an Empty Map | 0 | - | 4.97 | 118,836 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 51,258 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,142 |
| Countries with Megacities | 0 | - | 4.99 | 265,156 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,957 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,605 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,221 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,677 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,449,537 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,298 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.84 | 69,128 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,783 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,999 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 137,215 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 115,862 |
| All 100k+ Cities in Europe on a Map | 0 | - | 4.99 | 102,014 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 59,817 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,586 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 56,066 |
| Biggest City by Region | 0 | - | 4.50 | 36,302 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,217 |
| Northernmost Major City by Country | 0 | - | 4.57 | 33,243 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 52,390 |
| Two Largest Cities by First Two Letters | 0 | - | 4.52 | 83,400 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,479 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,025 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,384 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,268 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,639 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 93,835 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,294 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 159,657 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,646 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 118,831 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.90 | 83,439 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 42,131 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 117,621 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,598 |
| Biggest Cities in Europe | 0 | - | 4.73 | 547,600 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,924 |
| Demographics Multiple Choice | 0 | - | 4.70 | 42,316 |
| Biggest English-Speaking Cities | 0 | - | 4.44 | 165,225 |
| Fastest Growing U.S. Cities | 0 | - | 4.35 | 73,104 |
| Biggest Cities in History | 0 | - | 4.52 | 90,354 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 78,441 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 28,101 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,864 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,578 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 56,341 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 126,718 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.54 | 43,509 |
| Biggest Cities by Trait #2 | 0 | - | 4.47 | 20,755 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 57,073 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,569 |
| Biggest Cities in the Blue Banana | 0 | - | 4.57 | 36,524 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,264 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,667 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 124,600 |
| Biggest Cities Starting With D | 0 | - | 4.52 | 116,842 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 109,648 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 123,250 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 143,690 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 127,372 |
| Countries of Europe by Population | 0 | - | 4.98 | 181,794 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,964 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,741 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 130,836 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,250 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,409 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,559 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 93,023 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,366 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,573 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,342 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,982 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,371 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,676 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,485 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,286 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,463 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,620 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,390 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.70 | 67,192 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 96,708 |
| All Cities in China with Population of 1 Million | 0 | - | 4.82 | 46,313 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,314 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 99,341 |
| All Cities in India with Population of 1 Million | 0 | - | 4.84 | 47,710 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 41,871 |
| Every 100k+ City in the United States on a Map | 0 | - | 4.97 | 114,843 |
| Boundary Waters | 0 | - | 4.92 | 88,616 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.86 | 35,290 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,364 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,867 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,693 |
| "Second Best" Geography Edition #3 | 0 | - | 4.89 | 70,662 |
| Most Populous Islands | 0 | - | 4.80 | 123,104 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,333 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,586 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,518 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.97 | 184,370 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 193,830 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 104,447 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,897 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,622 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 159,600 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,341 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 74,215 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 23,575 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 32,018 |
| Colour in the Flag Map by Guessing Cities | 0 | - | 4.92 | 64,792 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,956 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 163,050 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 105,490 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 87,270 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 127,009 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 128,510 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,969 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.68 | 23,750 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.64 | 107,948 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,854 |
| Biggest English Cities by Century | 0 | - | 4.90 | 106,532 |
| Five Biggest Cities by Country | 0 | - | 4.70 | 166,939 |
| Flags to Largest Cities | 0 | - | 4.54 | 51,577 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 223,550 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,647,597 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.77 | 115,904 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,643 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,833 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,523 |
| Largest World Cities With Four Letters | 0 | - | 4.39 | 64,225 |
| Biggest Cities Once in the Roman Empire | 0 | - | 4.81 | 75,870 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 47,036 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.43 | 90,960 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 44,073 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,913 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 32,066 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 40,456 |
| Most Populous U.S. Cities as a Percent of Their State | 0 | - | 4.78 | 55,287 |
| Cities in European Economic Areas on a Map | 0 | - | 4.70 | 17,858 |
| Biggest Cities in Australia on a Map | 0 | - | 4.62 | 38,054 |
| Landlocked Countries | 0 | - | 4.99 | 422,796 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 579,667 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,752 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,103 |
| Countries Losing the Most Population by 2070 | 0 | - | 4.40 | 84,629 |
| Population Trivia | 0 | - | 4.32 | 27,525 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 21,513 |
| World Capitals Quiz | 0 | - | 5.00 | 5,088,327 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,924 |
| Himalayan Countries | 0 | - | 4.95 | 139,090 |
| Andean Countries | 0 | - | 4.93 | 84,831 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,058 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,166 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,637 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,953 |
| Danube Countries | 0 | - | 4.97 | 72,114 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,158 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,520 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,491 |
