| Most Populous World Capitals | 0 | - | 4.94 | 175,842 |
| Biggest Cities in the World | 0 | - | 4.91 | 797,926 |
| Biggest City by Time Zone | 0 | - | 4.88 | 67,800 |
| Biggest City in Every Country | 0 | - | 4.98 | 100,356 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 224,743 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 110,186 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 133,503 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 79,695 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 84,422 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 79,751 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 57,992 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,949 |
| Ten Southernmost Megacities | 0 | - | 4.87 | 64,151 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 67,545 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 130,148 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 417,082 |
| Biggest Cities in the United States | 0 | - | 4.94 | 977,324 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 365,915 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,840 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,058 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 128,423 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,262 |
| Largest City by Island | 0 | - | 4.87 | 71,800 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 70,892 |
| Biggest European Cities by Century | 0 | - | 4.99 | 145,382 |
| Megacities on a World Map | 0 | - | 4.98 | 254,222 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 577,708 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,303 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 74,855 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 114,486 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 168,247 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,754 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,061 |
| Biggest Cities in Asia | 0 | - | 4.95 | 116,840 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,979 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 345,255 |
| Megacities on an Empty Map | 0 | - | 4.97 | 118,288 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,900 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,283 |
| Countries with Megacities | 0 | - | 4.99 | 262,566 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,117 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,130 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,417 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,179 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,444,646 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,076 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,874 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,494 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,165 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 136,676 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 115,184 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 59,505 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,070 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,956 |
| Biggest City by Region | 0 | - | 4.50 | 36,182 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,111 |
| Northernmost Major City by Country | 0 | - | 4.56 | 33,173 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,342 |
| Two Largest Cities by First Two Letters | 0 | - | 4.52 | 83,221 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,396 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,653 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,625 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,812 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,349 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,469 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,017 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 159,175 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,184 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 118,290 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 79,332 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 41,708 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 116,705 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,141 |
| Biggest Cities in Europe | 0 | - | 4.73 | 546,043 |
| Africa Capitals Quiz | 0 | - | 4.99 | 736,955 |
| Asia Capitals Quiz | 0 | - | 4.98 | 692,157 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,832 |
| Demographics Multiple Choice | 0 | - | 4.70 | 42,244 |
| Biggest English-Speaking Cities | 0 | - | 4.44 | 152,510 |
| Fastest Growing U.S. Cities | 0 | - | 4.35 | 73,029 |
| Biggest Cities in History | 0 | - | 4.52 | 90,093 |
| Top 10 World Cities Through History | 0 | - | 4.42 | 77,067 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 28,050 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,797 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,544 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 56,029 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 125,919 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,389 |
| Biggest Cities by Trait #2 | 0 | - | 4.47 | 20,577 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 56,627 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,435 |
| Biggest Cities in the Blue Banana | 0 | - | 4.56 | 36,362 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,266 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 124,256 |
| Biggest Cities Starting With D | 0 | - | 4.52 | 116,568 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 109,334 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 122,685 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 143,279 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 127,020 |
| Countries of Europe by Population | 0 | - | 4.98 | 180,551 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,522 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,553 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 130,356 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 107,817 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,086 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,257 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,869 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,885 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,200 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,153 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,665 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,221 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,511 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,182 |
| Europe Capital to Country | 0 | - | 4.99 | 249,884 |
| Asia Capital to Country | 0 | - | 4.96 | 126,584 |
| EU Capitals with No Hints | 0 | - | 4.96 | 145,761 |
| European Capitals by Map | 0 | - | 4.99 | 138,942 |
| African Capitals by Map | 0 | - | 4.99 | 133,639 |
| Asian Capitals by Map | 0 | - | 4.98 | 62,253 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 92,001 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 84,345 |
| European Coastal Capitals | 0 | - | 4.95 | 90,522 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,552 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 269,636 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 223,815 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,799 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,887 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,038 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.73 | 73,448 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,278 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.70 | 65,699 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 95,850 |
| All Cities in China with Population of 1 Million | 0 | - | 4.81 | 46,009 |
| Cities of China (With Some Help) | 0 | - | 4.90 | 31,527 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,177 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 98,561 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,521 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 41,471 |
| Every 100k+ City in the United States on a Map | 0 | - | 4.97 | 114,080 |
| Boundary Waters | 0 | - | 4.92 | 88,433 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,127 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,016 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,347 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,415 |
| Most Populous Islands | 0 | - | 4.80 | 122,873 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,291 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,523 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,733 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 183,729 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 193,205 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 103,766 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,795 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,394 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 159,162 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,191 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,857 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 23,367 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 31,912 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,918 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 162,659 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 105,258 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 87,056 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 126,497 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 128,170 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,671 |
| South America Capitals Quiz | 0 | - | 5.00 | 481,027 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,468 |
| African Capitals - Map Quiz | 0 | - | 4.94 | 62,401 |
| Top 10 Most Remote European Capitals | 0 | - | 4.87 | 93,972 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 119,164 |
| Five Most Inland Capital Cities by Continent | 0 | - | 4.91 | 12,983 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,785 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 82,142 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 61,270 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 226,477 |
| European Capitals Ending in N | 0 | - | 4.92 | 81,242 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.68 | 23,632 |
| Capitals of the Stans | 0 | - | 4.95 | 26,815 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.70 | 107,716 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,725 |
| Biggest English Cities by Century | 0 | - | 4.90 | 106,220 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 166,500 |
| Flags to Largest Cities | 0 | - | 4.54 | 51,335 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 222,920 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,404,022 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.77 | 115,616 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,384 |
| Biggest European Cities by Letter | 0 | - | 4.54 | 126,608 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,460 |
| Largest World Cities With Four Letters | 0 | - | 4.39 | 63,097 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,972 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 84,925 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 43,943 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,801 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 32,001 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 40,369 |
| Cities in European Economic Areas on a Map | 0 | - | 4.69 | 17,570 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 37,874 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 89,033 |
