| Most Populous World Capitals | 0 | - | 4.94 | 174,912 |
| Biggest Cities in the World | 0 | - | 4.91 | 793,569 |
| Biggest City by Time Zone | 0 | - | 4.88 | 67,107 |
| Biggest City in Every Country | 0 | - | 4.98 | 99,317 |
| Five Most Populated Cities by Continent | 0 | - | 4.93 | 223,140 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 109,380 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.96 | 131,551 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 78,963 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 83,895 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 79,050 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 53,385 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,468 |
| Ten Southernmost Megacities | 0 | - | 4.85 | 57,003 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 67,040 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 129,204 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 415,185 |
| Biggest Cities in the United States | 0 | - | 4.93 | 971,316 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 364,716 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,231 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 123,489 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 127,395 |
| Biggest Cities by Language | 0 | - | 4.96 | 245,202 |
| Largest City by Island | 0 | - | 4.87 | 71,363 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 70,572 |
| Biggest European Cities by Century | 0 | - | 4.99 | 144,903 |
| Megacities on a World Map | 0 | - | 4.98 | 252,189 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 575,194 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,005 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 74,316 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 113,470 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 167,665 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,522 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,374 |
| Biggest Cities in Asia | 0 | - | 4.95 | 116,062 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,708 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 343,371 |
| Megacities on an Empty Map | 0 | - | 4.97 | 117,141 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,539 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,166 |
| Countries with Megacities | 0 | - | 4.99 | 248,712 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,031 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,484 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,399 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,435 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,344 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,698 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,676 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,262 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 223,154 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 136,066 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 114,317 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 59,173 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 101,975 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,826 |
| Biggest City by Region | 0 | - | 4.50 | 36,057 |
| Most Populous 2nd Cities | 0 | - | 4.77 | 56,988 |
| Northernmost Major City by Country | 0 | - | 4.56 | 33,096 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,274 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 83,058 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,314 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,248 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,818 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,279 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,055 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,056 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,600 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,668 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,756 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 117,727 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,991 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 41,202 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 116,008 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,803 |
| Biggest Cities in Europe | 0 | - | 4.70 | 543,480 |
| Africa Capitals Quiz | 0 | - | 4.99 | 733,256 |
| Asia Capitals Quiz | 0 | - | 4.98 | 688,678 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,725 |
| Demographics Multiple Choice | 0 | - | 4.69 | 42,158 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 151,744 |
| Fastest Growing U.S. Cities | 0 | - | 4.34 | 72,934 |
| Biggest Cities in History | 0 | - | 4.52 | 89,338 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 72,203 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 28,000 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,715 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,506 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 55,774 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 125,030 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,270 |
| Biggest Cities by Trait #2 | 0 | - | 4.46 | 20,383 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 56,145 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,298 |
| Biggest Cities in the Blue Banana | 0 | - | 4.56 | 36,188 |
| Biggest Cities in Germany | 0 | - | 4.95 | 292,205 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 123,808 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 116,224 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 108,901 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 122,223 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 142,761 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 126,277 |
| Countries of Europe by Population | 0 | - | 4.98 | 179,119 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,726 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,312 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,799 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 107,306 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,686 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,865 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,585 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,925 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,632 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,505 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,868 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 66,742 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,995 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,504 |
| Europe Capital to Country | 0 | - | 4.99 | 248,760 |
| Asia Capital to Country | 0 | - | 4.96 | 126,115 |
| EU Capitals with No Hints | 0 | - | 4.96 | 145,042 |
| European Capitals by Map | 0 | - | 4.99 | 137,544 |
| African Capitals by Map | 0 | - | 4.99 | 132,763 |
| Asian Capitals by Map | 0 | - | 4.98 | 61,676 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,556 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 83,928 |
| European Coastal Capitals | 0 | - | 4.95 | 90,061 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,337 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 268,087 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 222,667 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,563 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,465 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,520 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.73 | 73,233 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,146 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.56 | 49,271 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 95,011 |
| All Cities in China with Population of 1 Million | 0 | - | 4.81 | 45,682 |
| Cities of China (With Some Help) | 0 | - | 4.90 | 31,379 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,037 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 97,702 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,290 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 41,055 |
| Every 100k+ City in the United States on a Map | 0 | - | 4.97 | 113,202 |
| Boundary Waters | 0 | - | 4.92 | 88,203 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,943 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,611 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.94 | 61,756 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 60,086 |
| Most Populous Islands | 0 | - | 4.79 | 122,176 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,232 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,446 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 231,643 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 182,546 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 192,404 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 103,308 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,689 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 107,996 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,758 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 63,994 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,413 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.84 | 23,128 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 31,813 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,873 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 162,160 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 104,963 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 86,808 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 126,066 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 127,746 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,873 |
| South America Capitals Quiz | 0 | - | 5.00 | 478,935 |
| North America Capitals Quiz | 0 | - | 4.99 | 218,070 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 61,939 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,662 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,533 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,462 |
| European Capitals Furthest from the Sea | 0 | - | 4.91 | 81,899 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 60,776 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 225,729 |
| European Capitals Ending in N | 0 | - | 4.92 | 80,966 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.68 | 23,490 |
| Capitals of the Stans | 0 | - | 4.95 | 26,585 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.69 | 107,480 |
| Biggest Cities in Latin America | 0 | - | 4.47 | 64,567 |
| Biggest English Cities by Century | 0 | - | 4.90 | 105,754 |
| Five Biggest Cities by Country | 0 | - | 4.70 | 166,022 |
| Flags to Largest Cities | 0 | - | 4.54 | 51,035 |
| Biggest World Cities A-Z | 0 | - | 4.62 | 222,222 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,131,964 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.77 | 115,181 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,143 |
| Biggest European Cities by Letter | 0 | - | 4.54 | 126,383 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,386 |
| Largest World Cities With Four Letters | 0 | - | 4.36 | 50,940 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,903 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 84,555 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 43,822 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,708 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 31,936 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 40,263 |
| Cities in European Economic Areas on a Map | 0 | - | 4.69 | 17,246 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 37,692 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,698 |
| Name a Valid European Capital | 0 | - | 4.95 | 151,553 |
