| Biggest Cities in the World | 0 | - | 4.91 | 796,941 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,748 |
| Biggest City by Time Zone | 0 | - | 4.88 | 67,530 |
| Biggest City in Every Country | 0 | - | 4.98 | 99,999 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 224,275 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 109,959 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 132,985 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 79,441 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 84,244 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 79,528 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 53,705 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,812 |
| Ten Southernmost Megacities | 0 | - | 4.85 | 62,121 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 67,408 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 129,905 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 416,584 |
| Biggest Cities in the United States | 0 | - | 4.94 | 975,991 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 365,612 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,698 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 123,935 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 128,076 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,058 |
| Largest City by Island | 0 | - | 4.87 | 71,705 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 70,803 |
| Most Populous World Capitals | 0 | - | 4.94 | 175,703 |
| Biggest European Cities by Century | 0 | - | 4.99 | 145,277 |
| Megacities on a World Map | 0 | - | 4.98 | 253,542 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 577,165 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,230 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 74,733 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 114,280 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 168,109 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,131 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,920 |
| Biggest Cities in Asia | 0 | - | 4.95 | 116,684 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,910 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 344,875 |
| Megacities on an Empty Map | 0 | - | 4.97 | 118,146 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,826 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,077 |
| Countries with Megacities | 0 | - | 4.99 | 260,836 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,932 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,018 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,208 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,034 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,522 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,788 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,805 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,414 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 223,965 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 136,550 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 115,014 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 59,422 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,051 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,924 |
| Biggest City by Region | 0 | - | 4.50 | 36,128 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,058 |
| Northernmost Major City by Country | 0 | - | 4.56 | 33,157 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,330 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 83,174 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,373 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,571 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,462 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,695 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,288 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,389 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,943 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 159,064 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,082 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 118,169 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 79,242 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 41,609 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 116,534 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,065 |
| Biggest Cities in Europe | 0 | - | 4.73 | 545,546 |
| United States Map Quiz | 0 | - | 4.98 | 4,154,549 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,805 |
| Demographics Multiple Choice | 0 | - | 4.70 | 42,222 |
| Biggest English-Speaking Cities | 0 | - | 4.44 | 152,397 |
| Fastest Growing U.S. Cities | 0 | - | 4.35 | 73,006 |
| Biggest Cities in History | 0 | - | 4.52 | 90,023 |
| Top 10 World Cities Through History | 0 | - | 4.41 | 76,381 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 28,035 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,758 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,538 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 55,974 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 125,703 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,362 |
| Biggest Cities by Trait #2 | 0 | - | 4.47 | 20,542 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 56,538 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,401 |
| Biggest Cities in the Blue Banana | 0 | - | 4.56 | 36,318 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,045 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 124,141 |
| Biggest Cities Starting With D | 0 | - | 4.52 | 116,469 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 109,223 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 122,540 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 143,139 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 126,907 |
| Countries of Europe by Population | 0 | - | 4.98 | 180,255 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,419 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,513 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 130,254 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 107,739 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,993 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,185 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,832 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,781 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,123 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,099 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,545 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,174 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,456 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,099 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,807 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,937 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.73 | 73,395 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,246 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.69 | 64,854 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 95,688 |
| All Cities in China with Population of 1 Million | 0 | - | 4.81 | 45,953 |
| Cities of China (With Some Help) | 0 | - | 4.90 | 31,504 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,145 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 98,383 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,481 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 41,380 |
| Every 100k+ City in the United States on a Map | 0 | - | 4.97 | 113,916 |
| Boundary Waters | 0 | - | 4.92 | 88,386 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,092 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,927 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.94 | 62,208 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,354 |
| Most Populous Islands | 0 | - | 4.80 | 122,811 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,279 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,510 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,507 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 183,559 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 193,072 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 103,667 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,773 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,363 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 159,066 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,145 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,736 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 23,325 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 31,875 |
| Colour in the Flag Map by Guessing Cities | 0 | - | 4.92 | 64,474 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,912 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 162,519 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 105,171 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 86,985 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 126,382 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 128,072 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,604 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 62,280 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 119,031 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 61,129 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 135,398 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,080 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,088 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.68 | 23,600 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.70 | 107,664 |
| Biggest Cities in Latin America | 0 | - | 4.47 | 64,685 |
| Biggest English Cities by Century | 0 | - | 4.90 | 106,178 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 166,378 |
| Flags to Largest Cities | 0 | - | 4.54 | 51,262 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 222,764 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,345,285 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.77 | 115,538 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,340 |
| Biggest European Cities by Letter | 0 | - | 4.54 | 126,566 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,453 |
| Largest World Cities With Four Letters | 0 | - | 4.36 | 51,195 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,957 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 84,845 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 43,915 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,781 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 31,992 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 40,345 |
| Most Populous U.S. Cities as a Percent of Their State | 0 | - | 4.78 | 55,118 |
| Cities in European Economic Areas on a Map | 0 | - | 4.69 | 17,511 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 37,837 |
| Landlocked Countries | 0 | - | 4.99 | 419,123 |
| Countries Bordering the Mediterranean - Map Quiz | 0 | - | 4.87 | 88,914 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,508 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,639 |
| Countries Losing the Most Population by 2070 | 0 | - | 4.40 | 84,430 |
| Population Trivia | 0 | - | 4.32 | 27,475 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 21,442 |
| World Capitals Quiz | 0 | - | 5.00 | 5,064,631 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 130,244 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,055 |
| Himalayan Countries | 0 | - | 4.94 | 137,498 |
| Andean Countries | 0 | - | 4.95 | 83,975 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,250 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,711 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,864 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,373 |
| Danube Countries | 0 | - | 4.97 | 71,683 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,581 |
